Relationships in Triangles

Compare measure of angle Y and measure of angle M.

• measure of angle Y = measure of angle M

• measure of angle Y > measure of angle M

• measure of angle Y < measure of angle M

• Not enough information is given.

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

• Yes

• No

Which of the following does not represent the lengths of the sides of a triangle?

• 2 cm, 6 cm, 7 cm

• 5 cm, 2 cm, 5 cm

• 5 cm, 5 cm, 8 cm

• 3 cm, 10 cm, 15 cm

Name the largest angle in this triangle.

• ∠D

• ∠E

• ∠F

Can the sides of a triangle have lengths 4, 11, and 13?

• Yes

• No

Find the indicated angle measure. (What is ?)

• 51°

• 37°

• 167°

• 41°

Find <S

• A

• B

• C

• D

What is the measure of angle b?

• 36^o

• 56^o

• 63^o

• 117^o

Find the measure of the angle indicated. 

• 139°

• 66°

• 138°

• 116°

Find the measure of the missing angle.

• 90^o

• 10⁰

• 130^o

• 50^o