Three Sides Form a Triangle

a = 2.1, b = 7.2, c = 7.5
Is this a right triangle?

• yes 

• no

Find the measure of each angle indicated.

• 50

• 20

• 29

• 48

Find the measure of the missing angle.

• 30^o

• 110^o

• 150^o

• 40^o

Find the measure of each angle indicated.

• 50

• 55

• 60

• 70

Find the measure of each angle indicated.

• 62

• 53

• 71

• 50

A triangle has one angle that measure 81° and one that measures 37°. What is the measure of the third angle?

• 62°

• 76°

• 118°

• 99°

Do the following side lengths form a triangle?
2 inches, 2 inches, 4 inches

• Yes

• No

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

• Yes

• No

• I don't know.

Does a triangle with these

side lengths exist?

(Don't fall for this one.)

0, 11, 12

• Yes

• No

• I don't know.

If the longest side of the triangle was 10. Then the two shorter sides must have a sum that is ....?

• any length

• equal to 10

• greater than 10

• less than 10