Loading in 5 sec....

How Big Is My Triangle?PowerPoint Presentation

How Big Is My Triangle?

- By
**rex** - Follow User

- 165 Views
- Uploaded on

Download Presentation
## PowerPoint Slideshow about ' How Big Is My Triangle?' - rex

**An Image/Link below is provided (as is) to download presentation**
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

Presentation Transcript

### How Big Is My Triangle?

Calculating the Area of a Triangle

A triangle is one-half of a parallelogram.

The second triangle has been turned upside down.

When the second triangle is placed adjacent to the first one, the two triangles form a parallelogram.

1st triangle

2nd triangle

You know how to find the area of a parallelogram.

Height (h) = 4 in

Base × Height (b × h) = Area

6 × 4 = 24 square inches

Base (b) = 6 in

If a triangle is half of a parallelogram, how do you think you find the area of a triangle?

Multiply base by height (b × h)

Multiply base by height and divide by 2

(b × h) ÷ 2

Multiply base by height and multiply by 2

b × h × 2

So, how do you find the base and height of a triangle? you find the area of a triangle?

A right triangle is easy

This isosceles triangle

isn’t too hard

This scalene triangle can be

a little more challenging

height

base

height

base

height

base

What is the area of the triangle below? you find the area of a triangle?

Use the formula (b × h) ÷ 2

15 square inches

10 square inches

7½ square inches

5 in

3 in

Draw lines to show where you could measure the base and height of this triangle.

If this triangle has the specified base and height of this triangle.height, what is its area?

21 square inches

42 square inches

13½ squareinches

6 in

7 in

Draw lines to show where you could measure the base and height of this triangle.

If this triangle has the specified base and height of this height, what is its area?

4½ square inches

18 square inches

9 square inches

9 in

2 in

Download Presentation

Connecting to Server..