Download presentation

Presentation is loading. Please wait.

Published byBryanna Scantlebury Modified over 2 years ago

1
Area Of A Trapezoid There are six different ways to calculate the area of a trapezoid Half parallelogram Rectangle/triangle Parallelogram & Triangle Parallelogram Rectangle Two Triangles b2 b1 h

2
b2 b1 h 1/2h b2 b1 Area Of A Trapezoid Draw the segment connecting the midpoints of the legs. Start with a trapezoid

3
Area Of A Trapezoid Rotate the top section of the trapezoid and then move it to line up with the bottom half.

4
The area now is the area of a parallelogram b1b2 1/2h In this case the base of the parallelogram is b1+b2 and the height is only half of the original height. Area Of A Trapezoid Home

5
h b1 b2 b1 h Area Of A Trapezoid Split the trapezoid into a rectangle and two triangles

6
Area Of A Trapezoid b2 h b1-b2 h So the area of the trapezoid is now the area of the two triangles put together plus the area of the rectangle Home Giving the formula…?

7
h b1 b2 b1 b2 h Area Of A Trapezoid Split the trapezoid into a parallelogram and a triangle

8
b1-b2b2 h Area Of A Trapezoid b2 h The area of the trapezoid is now the area of the parallelogram plus the area of the triangle. Home Giving the formula…?

9
Area Of A Trapezoid h b1 b2 Take the trapezoid and copy it.

10
h b1 b2 Area Of A Trapezoid Rotate the image and then move it to line up with the other trapezoid

11
Area Of A Trapezoid h b1 b2 So the area of this trapezoid is ½ of the parallelogram. b2 b1 parallelogram: Home Giving the formula…?

12
1/2h b2 b1 Area Of A Trapezoid Find the midpoint of each leg. From each midpoint, drop a perpendicular to the longer base, forming right triangles.

13
b2 b1 Area Of A Trapezoid Rotate the right triangles to form a rectangle.

14
Area Of A Trapezoid So the area is now the area of the rectangle. Find the width. Rectangle: Home b h Giving the formula…?

15
h b1 b2 h b1 b2 Area Of A Trapezoid Draw in a diagonal forming two triangles.

16
Area Of A Trapezoid h b1 b2 h The Area is the sum of the two triangles Triangle 1: Triangle 2: Home Giving the formula…?

17
Area Of A Trapezoid The area of a trapezoid can be calculated many ways, but in the end they all come up with the same formula can you guess what formula it is?

Similar presentations

Presentation is loading. Please wait....

OK

Area of Quadrilaterals

Area of Quadrilaterals

© 2017 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Ppt on obesity management dog Ppt on child labour for class 9 Ppt on third generation solid state drives Ppt on social networking sites download Ppt on acid base and salts Ppt on combination of resistances definition Ppt on common man made disasters Ppt on life history of bill gates Doc convert to ppt online student Ppt on image compression using matlab