Topic 10-3 (Area of a Triangle)

Topic 10-3 (Area of a Triangle)

School Year 2022-2023

Let's start with a couple of review questions...

You ready?

Multiple Choice

1.) Whose green paint mixture has a yellow-to-blue unit rate of 5 ounces to 1 ounce?

• Clara

• Faye

• Jim

• No One

Fill in the Blank

2.) Of the seeds Quincey planted in his tomato garden, 60% grew into mature plants. If Quincey has 24 tomato plants in his garden, how many seeds did he plant?

Multiple Choice

3.) What is the perimeter, in miles, of the rectangle formed by connecting the points representing the cabana, beach, water slide, and roller coaster?

• 10 miles

• 11 miles

• 20 miles

• 22 miles

Now it's time for Triangle-pa-looza!

WHOOP WHOOP!

Multiple Choice

4.) What is the area of the triangle?

• 12 cm²

• 14 cm²

• 18 cm²

• 24 cm²

Multiple Choice

5.) Find the area of the triangle

• 22 in²

• 12 in²

• 24 in²

• 6 in²

Fill in the Blank

6.) What is the area of the triangle shown?

Fill in the Blank

7.) Mr. Millstein accidently erased the base for the triangle shown. He knows the area is 40 square feet. What does the base have to be?

Multiple Choice

What is another way you can write the area of a triangle formula?

• $$A\ =\ bh$$

• $$A\ =\ \frac{bh}{2}$$

• $$A\ =\ 2bh$$

• $$A\ =\ \frac{1}{2}h\left(b1\ +\ b2\right)$$

Multiple Select

8.) Select all the expressions that represent the area of the triangle shown.

• $$A\ =\ \frac{1}{2}\left(12\ \times\ 16\ \right)$$  

• $$A\ =\ 12\ \times\ 16$$  

• $$A\ =\ 9.6\ \times\ 20$$  

• $$A\ =\ \frac{1}{2}\left(16\ \times\ 9.6\right)$$  

• $$A\ =\ \frac{1}{2}\left(20\ \times\ 9.6\right)$$  

Open Ended

Can any side of a triangle be the base of the triangle?