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**Complete on the back of your homework.**

5 Minute Check Complete on the back of your homework. 1. Suppose the base and height of a parallelogram is multiplied by 4. What effect would this have on the perimeter of the parallelogram? 2. Suppose the base and height of a parallelogram is multiplied by 4. What effect would this have on the area of the parallelogram? 3. Suppose the base and height of an octagon is multiplied by 6. What effect would this have on the perimeter of the octagon? 4. Suppose the base and height of an octagon is multiplied by 6. What effect would this have on the area of the octagon?

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**Complete on the back of your homework.**

5 Minute Check Complete on the back of your homework. 1. Suppose the base and height of a parallelogram is multiplied by 4. What effect would this have on the perimeter of the parallelogram?

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**Complete on the back of your homework.**

5 Minute Check Complete on the back of your homework. 1. Suppose the base and height of a parallelogram is multiplied by 4. What effect would this have on the perimeter of the parallelogram? The perimeter is 4 times larger.

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**Complete on the back of your homework.**

5 Minute Check Complete on the back of your homework. 2. Suppose the base and height of a parallelogram is multiplied by 4. What effect would this have on the area of the parallelogram?

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**Complete on the back of your homework.**

5 Minute Check Complete on the back of your homework. 2. Suppose the base and height of a parallelogram is multiplied by 4. What effect would this have on the area of the parallelogram? The area is 4², or 16, times larger.

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**Complete on the back of your homework.**

5 Minute Check Complete on the back of your homework. 3. Suppose the base and height of an octagon is multiplied by 6. What effect would this have on the perimeter of the octagon?

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**Complete on the back of your homework.**

5 Minute Check Complete on the back of your homework. 3. Suppose the base and height of an octagon is multiplied by 6. What effect would this have on the perimeter of the octagon? The perimeter is 6 times larger.

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**Complete on the back of your homework.**

5 Minute Check Complete on the back of your homework. 4. Suppose the base and height of an octagon is multiplied by 6. What effect would this have on the area of the octagon?

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**Complete on the back of your homework.**

5 Minute Check Complete on the back of your homework. 4. Suppose the base and height of an octagon is multiplied by 6. What effect would this have on the area of the octagon? The area is 6², or 36, times larger.

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9-4 Review If you increase the sides of any shape by 2 times, you increase the perimeter by what?

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9-4 Review If you increase the sides of any shape by 2 times, you increase the perimeter by what? 2 times If you increase the sides of any shape by 2 times, you increase the area by what?

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9-4 Review If you increase the sides of any shape by 2 times, you increase the perimeter by what? 2 times If you increase the sides of any shape by 2 times, you increase the area by what? 2² times

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9-4 Review Perimeter Area 2 times 2 times 4 times

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9-4 Review Perimeter Area 2 times 2 times 4 times If you increase the sides of any shape by 3 times, you increase the perimeter by what?

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9-4 Review Perimeter Area 2 times 2 times 4 times If you increase the sides of any shape by 3 times, you increase the perimeter by what? 3 times If you increase the sides of any shape by 3 times, you increase the area by what?

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9-4 Review Perimeter Area 2 times 2 times 4 times If you increase the sides of any shape by 3 times, you increase the perimeter by what? 2 times If you increase the sides of any shape by 3 times, you increase the area by what? 3² times

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9-4 Review Perimeter Area 2 times 2 times 4 times 3 times 3 times 9 times

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9-4 Review Perimeter Area 2 times 2 times 4 times 3 times 3 times 9 times If you increase the sides of any shape by 4 times, you increase the perimeter by what?

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9-4 Review Perimeter Area 2 times 2 times 4 times 3 times 3 times 9 times If you increase the sides of any shape by 4 times, you increase the perimeter by what? 4 times

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9-4 Review Perimeter Area 2 times 2 times 4 times 3 times 3 times 9 times If you increase the sides of any shape by 4 times, you increase the perimeter by what? 4 times If you increase the sides of any shape by 4 times, you increase the area by what?

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9-4 Review Perimeter Area 2 times 2 times 4 times 3 times 3 times 9 times If you increase the sides of any shape by 4 times, you increase the perimeter by what? 4 times If you increase the sides of any shape by 4 times, you increase the area by what? 4² times

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9-4 Review Perimeter Area 2 times 2 times 4 times 3 times 3 times 9 times 4 times 4 times 16 times 5 times ? ?

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9-4 Review Perimeter Area 2 times 2 times 4 times 3 times 3 times 9 times 4 times 4 times 16 times 5 times 5 times 25 times

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9-4 Review Perimeter Area 2 times 2 times 4 times 3 times 3 times 9 times 4 times 4 times 16 times 5 times 5 times 25 times 6 times ? ?

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9-4 Review Perimeter Area 2 times 2 times 4 times 3 times 3 times 9 times 4 times 4 times 16 times 5 times 5 times 25 times 6 times 6 times 36 times

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Flashcards

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**Chapter 9.5 Polygons on the Coordinate Plane**

Monday, Feb 10 Chapter 9.5 Polygons on the Coordinate Plane

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**Polygons on the Coordinate Plane**

Objective: To draw polygons on the coordinate plane and use coordinates to find lengths.

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**Polygons on the Coordinate Plane**

At the end of this lesson you should be able to answer the following question. How can coordinates help you find the areas of figures on the coordinate plane?

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**Polygons on the Coordinate Plane**

Graph the figure then classify it (tell what shape it is). Then find the area. A(-3,-4), B(-3,5), C(2,5), D(2,-4) Do this on your own.

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**Polygons on the Coordinate Plane**

Graph the figure then classify it (tell what shape it is). Then find the area. A(-3,-4), B(-3,5), C(2,5), D(2,-4) A = 5 x 9 = 45u²

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**Polygons on the Coordinate Plane**

Graph the figure then classify it (tell what shape it is). Then find the area. R(3,-2), S(7,-2), T(8,-6), V(1,-6) Do this on your own.

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**Polygons on the Coordinate Plane**

Graph the figure then classify it (tell what shape it is). Then find the area. R(3,-2), S(7,-2), T(8,-6), V(1,-6) A = A = 22u²

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**Polygons on the Coordinate Plane**

Graph the figure then classify it (tell what shape it is). Then find the area. X(-7,2), Y(-7,6), Z(-4,2) Do this on your own.

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**Polygons on the Coordinate Plane**

Graph the figure then classify it (tell what shape it is). Then find the area. X(-7,2), Y(-7,6), Z(-4,2) A = A = 6u²

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**Polygons on the Coordinate Plane**

Graph the figure then classify it (tell what shape it is). Then find the area. A(3,3), B(3,6), C(5,6), D(8,3) Do this on your own.

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**Polygons on the Coordinate Plane**

Graph the figure then classify it (tell what shape it is). Then find the area. A(3,3), B(3,6), C(5,6), D(8,3) Area = 3(5+2) 2 = 3(7) 2 = 21 2 = 10.5u² It is a trapezoid.

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**Polygons on the Coordinate Plane**

We can also use the coordinates of a shape to find the dimensions by finding the distance between two points.

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**Polygons on the Coordinate Plane**

What is the length of LK; L (1,4) K(1, 9)? To find the distance between two ordered pairs, subtract the unique numbers and take the absolute value. I4 – 9I I-5I = 5

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**Polygons on the Coordinate Plane**

What is the length of ST; S (1,5) T(9, 5)? Do this on your own.

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**Polygons on the Coordinate Plane**

What is the length of ST; S (1,5) T(9, 5)? I1 – 9I I-8I = 8

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**Polygons on the Coordinate Plane**

A rectangle has vertices of A(2,8), B (7,8), C (7,5) and D(2,5). Use the coordinates to find the length of each side. Then find the perimeter. What is the length of AB?

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**Polygons on the Coordinate Plane**

A rectangle has vertices of A(2,8), B (7,8), C (7,5) and D(2,5). Use the coordinates to find the length of each side. Then find the perimeter. What is the length of AB? I2-7I = I-5I = 5 What is the length of BC?

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**Polygons on the Coordinate Plane**

A rectangle has vertices of A(2,8), B (7,8), C (7,5) and D(2,5). Use the coordinates to find the length of each side. Then find the perimeter. What is the length of AB? I2-7I = I-5I = 5 What is the length of BC? I8-5I = I3I = 3 What is the length of CD?

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**Polygons on the Coordinate Plane**

A rectangle has vertices of A(2,8), B (7,8), C (7,5) and D(2,5). Use the coordinates to find the length of each side. Then find the perimeter. What is the length of AB? I2-7I = I-5I = 5 What is the length of BC? I8-5I = I3I = 3 What is the length of CD? I7-2I = I5I = 5 What is the length of DA?

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**Polygons on the Coordinate Plane**

A rectangle has vertices of A(2,8), B (7,8), C (7,5) and D(2,5). Use the coordinates to find the length of each side. Then find the perimeter. What is the length of AB? I2-7I = I-5I = 5 What is the length of BC? I8-5I = I3I = 3 What is the length of CD? I7-2I = I5I = 5 What is the length of DA? I5-8I = I-3I = 3 What is the perimeter?

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**Polygons on the Coordinate Plane**

A rectangle has vertices of A(2,8), B (7,8), C (7,5) and D(2,5). Use the coordinates to find the length of each side. Then find the perimeter. What is the length of AB? I2-7I = I-5I = 5 What is the length of BC? I8-5I = I3I = 3 What is the length of CD? I7-2I = I5I = 5 What is the length of DA? I5-8I = I-3I = 3 What is the perimeter? = 16u

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**Polygons on the Coordinate Plane**

A rectangle has vertices of A(2,8), B (7,8), C (7,5) and D(2,5). Use the coordinates to find the length of each side. Then find the perimeter. What is the length of AB? I2-7I = I-5I = 5 What is the length of BC? I8-5I = I3I = 3 What is the length of CD? I7-2I = I5I = 5 What is the length of DA? I5-8I = I-3I = 3 What is the area?

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**Polygons on the Coordinate Plane**

A rectangle has vertices of A(2,8), B (7,8), C (7,5) and D(2,5). Use the coordinates to find the length of each side. Then find the perimeter. What is the length of AB? I2-7I = I-5I = 5 What is the length of BC? I8-5I = I3I = 3 What is the length of CD? I7-2I = I5I = 5 What is the length of DA? I5-8I = I-3I = 3 What is the area? 5 x 3 = 15u²

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**Polygons on the Coordinate Plane**

A rectangle ABCD has vertices of A(2,1), B (2,5), C (4,5) and D(4,1). Use the coordinates to find the length of each side. Then find the perimeter. Do this on your own.

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**Polygons on the Coordinate Plane**

A rectangle ABCD has vertices of A(2,1), B (2,5), C (4,5) and D(4,1). Use the coordinates to find the length of each side. Thn find the perimeter. AB = I1- 5I = I-4I = 4 BC = I2 – 4I = I -2I = 2 CD = I5 – 1I = I4I = 4 DA = I4 – 2I = I2I = 2 The perimeter is = 12u What is the area?

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**Polygons on the Coordinate Plane**

A rectangle ABCD has vertices of A(2,1), B (2,5), C (4,5) and D(4,1). Use the coordinates to find the length of each side. Then find the perimeter and area. AB = I1- 5I = I-4I = 4 BC = I2 – 4I = I -2I = 2 CD = I5 – 1I = I4I = 4 DA = I4 – 2I = I2I = 2 The perimeter is = 12u What is the area? 4 x 2 = 8u²

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**Polygons on the Coordinate Plane**

Each grid square on the zoo map has a length of 200 ft. Find the total distance, in feet, of the distance around the zoo. Do this on your own.

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**Polygons on the Coordinate Plane**

Each grid square on the zoo map has a length of 200 ft. Find the total distance, in feet, of the distance around the zoo = 42u Since each unit is 200ft, Then the total distance is 42 · 200 = 8400ft

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**Polygons on the Coordinate Plane**

Agenda Notes Homework– Homework Practice 9-5 Due Tuesday, Feb 11 Chapter 9 Test –Thursday, Feb 13

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9-4 Perimeter and Area in the Coordinate Plane Warm Up

9-4 Perimeter and Area in the Coordinate Plane Warm Up

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