AREA OF TRIANGLES AND TRAPEZOIDS #34. You can divide any parallelogram into two congruent triangles. So the area of each triangle is half the area of.

Slides:

Advertisements

Similar presentations

Honors Geometry Section 5.2 Areas of Triangles and Quadrilaterals

Advertisements

Area of Quadrilaterals

Museums The Rock and Roll Hall of Fame and Museum in Cleveland, Ohio, has a triangular shaped wall. What is the area of the wall? In the Real World Areas.

Warm Up Problem of the Day Lesson Presentation Lesson Quizzes.

10.1 Area of Rectangles and Parallelograms I can find the area of rectangles and parallelograms Area Rap.

Area of a rectangle: A = bh This formula can be used for squares and parallelograms. b h.

Perimeter and Area. AD = 15 inAC = 13 inBD = 10 inDL = 11 in EI = 3 inCH = 4 in A B CD GH E F L K J I.

Bell Work Find the area of each figure. 5 in 9 in 13 in 6 in 16 in 22 in 10 in A = (13 + 9) 5 A = 11 5 A = (22) 5 A = 55 in² A = ( ) 10 A =

Finding the Area of Polygons Vocabulary Perimeter – The sum of all sides of the shape. Area – The total occupied space of a shape in units squared.

Areas of Parallelograms and Triangles

9-3 Composite Figures Warm Up Lesson Presentation Lesson Quiz

Areas of Parallelograms and Triangles Geometry Unit 4, Lesson 1.

8-4 Area of Triangles and Trapezoids Learn to find the area of triangles and trapezoids.

Areas of Parallelograms & Triangles

Section aFind the area of a rectangle and a square. bFind the area of a parallelogram, a triangle, and a trapezoid. cSolve applied problems involving.

Honors Geometry Section 5.2 Areas of Triangles and Quadrilaterals.

Area of Triangles and Trapezoids

Area of Triangles and Trapezoids base altitude base.

Over Lesson 11–5 A.A B.B C.C D.D 5-Minute Check 1 Find the measure of all angles. Over Lesson x 54 2x.

U6L3 Area of Triangles & Trapezoids Do Now: Write in planner Get out homework to check/grade Set up for notes Find the circumference and area:

9-2 Volume of Prisms and Cylinders Course 2 Warm Up Warm Up Problem of the Day Problem of the Day Lesson Presentation Lesson Presentation.

PRE-ALGEBRA. How do you find the area of a triangle? If you divide a parallelogram in half using a diagonal line, the two halves are congruent (equal)

Chapter 8 - Area.

8-8 Volume of Prisms and Cylinders Warm Up Warm Up Lesson Presentation Lesson Presentation Problem of the Day Problem of the Day Lesson Quizzes Lesson.

9-2 Area of Triangles and Trapezoids Warm Up Warm Up Lesson Presentation Lesson Presentation Problem of the Day Problem of the Day Lesson Quizzes Lesson.

GEOMETRY 10.5 Surface Area of Pyramids and Cones.

10.4 Area of Triangles and Trapezoids. You will learn to find the areas of triangles and trapezoids. Nothing new!

10-1: Area of Parallelograms and Triangles Objectives: To find the area of parallelograms and triangles To find the area of parallelograms and triangles.

Area of Parallelograms

11.2 Areas of Parallelograms and Triangles

Given the parallelogram at right, we are able to determine that its area is equal to Activity You can use a parallelogram to find the area of a triangle.

11-1 Areas of Parallelograms & Triangles Ms. Andrejko.

8-4 Area of Parallelograms Course 2 Warm Up Problem of the Day Lesson Presentation.

WARM UP Find the area of an equilateral triangle with sides 8 ft.

10.1 Areas of Parallelograms and Triangles Area of a Rectangle – The area of a rectangle is the product of its base and height. – A = bh.

Half the circumference

Holt Geometry 9-3 Composite Figures Holt Geometry Warm Up Warm Up Lesson Presentation Lesson Presentation Lesson Quiz Lesson Quiz.

Learn and apply the formula for the surface area and volume of a pyramid. Learn and apply the formula for the surface area and volume of a cone. Objectives.

9.1 PERIMETER AND AREA OF PARALLELOGRAMS Objective: Students find the perimeter and area of parallelograms.

Holt Geometry 10-5 Surface Area of Pyramids and Cones 10-5 Surface Area of Pyramids and Cones Holt Geometry Warm Up Warm Up Lesson Presentation Lesson.

Chapter 10 Area Section 10.1 Areas of Parallelograms and Triangles.

SWBAT: Find the area of a trapezoid and a rhombus.

Areas of Trapezoids, Rhombuses, and Kites Objective: 1.To find the areas of trapezoids, rhombuses, and kites.

1 Area. Vocabulary  Area—The number of square units needed to cover a surface enclosed by a geometric figure.  Base—Any side of a parallelogram or triangle.

Name ____________Class_____ Date______ Area of Rectangles The ________ _ of a figure is the amount of surface it covers. It is measured in ________ __.

Area of Triangles and Trapezoids

Area of Parallelograms

Warm Up Problem of the Day Lesson Presentation Lesson Quizzes.

Area of Trapezoid.

Area of 2-Dimensional Figures

Section 11-5: Areas of Triangles & Trapezoids

Section 12-2 Pyramids.

Area of Triangles and Trapezoids

Area of Triangles and Trapezoids

Click the mouse button or press the Space Bar to display the answers.

Area of Parallelograms

Chapter 5 Types of Segments

Area – Learning Outcomes

UNIT 8: 2-D MEASUREMENTS PERIMETER AREA SQUARE RECTANGLE PARALLELOGRAM

10.1 Areas of Parallelograms and Triangles

Warm Up: Find the circumference of the circle. Round to nearest hundredth 1. r = 3.4 m d = 9 cm Find the area of the figures. 3. Circle with.

Warm Up Problem of the Day Lesson Presentation Lesson Quizzes.

Area Formula of a Square?

Areas of Parallelograms and Triangles

Warm Up Problem of the Day Lesson Presentation Lesson Quizzes.

Exercise 1 2 Evaluate xy when x = 7 and y =

Warm Up Problem of the Day Lesson Presentation Lesson Quizzes.

– I can find the surface areas of prisms, pyramids, and cylinders

Areas of Parallelograms and Triangles

Presentation transcript:

AREA OF TRIANGLES AND TRAPEZOIDS #34

You can divide any parallelogram into two congruent triangles. So the area of each triangle is half the area of the parallelogram. FYI

VOCABULARY

Find the area of the triangle. Example 1: Finding the Area of a Triangle

An altitude of a triangle is a perpendicular segment from one vertex to the line containing the opposite side. The length of the altitude is the height. Reading Math FYI

Example 2 Find the area of the triangle. 11 cm 4 cm

The diagram shows the floor plan for a triangular dining area. What is the area of the floor? Example m 34.8 m

The diagram shows the section of a forest being studied. What is the area of the section? Example 4: Application

Example 5 Mitch uses the piece of wood shown as part of a skateboard ramp. Its area is 0.8 m. What is the height of the piece of wood?. 2 m 2

Example 6 Mitch wants his skateboard ramp to be at least 750 cm tall. Should he use this piece of wood to build the ramp? Explain.?.

VOCABULARY

Find the area of the trapezoid. Example 7: Finding the Area of a Trapezoid

Example 8 Lisa wants to cut a hole in the shape of a trapezoid out of a piece of wood. The figure shows her plans, and each square of the grid represents 1 ft. What is the area of the remaining wood after she cuts out the hole? 2

Example 9 The figure shows a vegetable garden that is planted with squash and carrots. To the nearest percent, how much of the vegetable garden is for squash?