Download presentation

Presentation is loading. Please wait.

1
Perimeter © 2007 M. Tallman

2
**Perimeter (P)- the distance around a closed figure.**

© 2007 M. Tallman

3
**P = ? 16 cm Perimeter 4 × 4 cm = 16 cm 4 cm 4 cm 4 cm 4 cm**

© 2007 M. Tallman

4
**P = ? 23 cm Perimeter 4 cm 7 cm 7 cm 4 cm 7 cm + 7 cm + 4 cm + 4 cm =**

© 2007 M. Tallman

5
**P = 24 cm ? Perimeter 8 × 3 cm = 24 cm 3 cm 3 cm 3 cm 3 cm 3 cm 3 cm**

© 2007 M. Tallman

6
**P = ? 24 cm Perimeter 10 cm 8 cm 6 cm 8 cm + 6 cm + 10 cm = 24 cm**

© 2007 M. Tallman

7
**P = ? 24 cm Perimeter 4 cm 4 cm 5 cm 5 cm 6 cm 5 cm + 5 cm + 4 cm +**

© 2007 M. Tallman

8
**P = ? 22 cm Perimeter 4 cm 5 cm 5 cm 8 cm 5 cm + 5 cm + 4 cm + 8 cm =**

© 2007 M. Tallman

9
**Your Turn! P = 10 cm ? P = 12 cm ? P = 18 cm ? P = 16 cm ? P = 24 cm ?**

10
**Length (ℓ)- a side (usually the bottom) of a polygon.**

Length and Width Length (ℓ)- a side (usually the bottom) of a polygon. Width (w)- the measurement of a perpendicular line drawn from the length to the top of the polygon. Perpendicular Lines w w ℓ ℓ w w ℓ ℓ

11
**Perimeter of Squares P = 4 × 1 cm P = 4 cm P = 4 × 3 cm P = 12 cm P =**

Since the length (ℓ) of a square is congruent with all other sides, if you know the length of just one side, you can find the perimeter (P) for the entire square. You can add the length 4 times. P = ℓ+ ℓ + ℓ + ℓ Or you can multiply the length of the base by 4. P = 4 ℓ P = 4 × 1 cm 1 cm P = 4 cm 3 cm P = 4 × 3 cm P = 12 cm 4 cm P = 4 × 4 cm P = 16 cm © 2007 M. Tallman

12
**Perimeter of Rectangles**

Since rectangles have two congruent sides, if you know the length (ℓ) and the width (w) you can find the perimeter (P) for the entire rectangle. You can add to find the perimeter… P = ℓ + w + ℓ + w …or you can multiply and add. P = 2 × (ℓ + w) 1 cm P = 2 × (4 cm + 1 cm) 4 cm P = 2 × 5 cm P = 10 cm 5 cm 3 cm P = 2 × (5 cm + 3 cm) P = 2 × 8 cm P = 16 cm P = 2 × (6 cm + 4 cm) 4 cm P = 2 × 10 cm P = 20 cm 6 cm © 2007 M. Tallman

13
**Your Turn! 4 ft 12 ft P = 2 × ( 12 ft + 4 ft ) P = 2 × 16 ft P = 32 ft**

Use the formula P = ℓ + ℓ + w + w or P = 2 × (ℓ + w) to find the perimeter of the rectangle. 4 ft 12 ft P = 2 × ( 12 ft + 4 ft ) P = 2 × 16 ft P = 32 ft © 2007 M. Tallman

14
**Your Turn! 9 cm 11 cm P = 2 × ( 9 cm + 11 cm ) P = 2 × 20 cm P = 40 cm**

Use the formula P = ℓ + ℓ + w + w or P = 2 × (ℓ + w) to find the perimeter of the rectangle. 9 cm P = 2 × ( 9 cm + 11 cm ) P = 2 × 20 cm P = 40 cm 11 cm © 2007 M. Tallman

15
**Your Turn! 7 yd 7 yd P = 4 × 7 yd P = 28 yd**

Use the formula P = ℓ + ℓ + w + w or P = 2 × (ℓ + w) to find the perimeter of the rectangle. P = 4 × 7 yd P = 28 yd 7 yd 7 yd © 2007 M. Tallman

16
**Your Turn! 4 in 3 in P = 2 × ( 3 in + 4 in ) P = 2 × 7 in P = 14 in**

Use the formula P = ℓ + ℓ + w + w or P = 2 × (ℓ + w) to find the perimeter of the rectangle. P = 2 × ( 3 in + 4 in ) P = 2 × 7 in P = 14 in 4 in 3 in © 2007 M. Tallman

17
**Your Turn! 1 m 7 m P = 2 × ( 7 m + 1 m ) P = 2 × 8 m P = 16 m**

Use the formula P = ℓ + ℓ + w + w or P = 2 × (ℓ + w) to find the perimeter of the rectangle. 1 m 7 m P = 2 × ( 7 m + 1 m ) P = 2 × 8 m P = 16 m © 2007 M. Tallman

Similar presentations

OK

Do Now 4/17/13 Take out HW from last night. Copy HW in your planner.

Do Now 4/17/13 Take out HW from last night. Copy HW in your planner.

© 2017 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Ppt on satellite orbit tracking Ppt on microcontroller based home security system Ppt on main bodies of uno Ppt online compressor map Ppt on object-oriented programming definition Inferences in reading ppt on ipad The constitution for kids ppt on batteries Ppt on triangles for class 9th Ppt on area of parallelograms Ppt on types of pollution download