Area of a Triangle

Name the smallest angle in this triangle.

• ∠A

• ∠B

• ∠C

Does a triangle with these side lengths exist?
15, 12, 9

• Yes

• No

Does a triangle with these side lengths exist?
20, 10, 9

• Yes

• No

Does a triangle with these side lengths exist?
4, 6, 7

• Yes

• No

Find the measure of the indicated angle. 

• 95

• 85

• 35

• 45

Name the largest angle in this triangle.

• ∠D

• ∠E

• ∠F

Can the sides of a triangle have lengths 3, 8, and 9?

• Yes

• No

Find the area of a TRIANGLE with a base of 7 mm and a height of 10 mm?

• 70 mm²

• 35 mm²

• 17 mm²

• 8.5 mm²

Find the area of the figure

• 35 un²

• 70 un²

• 30 un²

• 168 un²

Find the area of this triangle. (a)  

• 150 ft2

• 100 ft2

• 50 ft2

• 35 ft2