Internal Angles of Triangle

Find the measure of the indicated angle. 

Tags

CCSS.8.G.A.5

Solve for x.

• 8

• 9

• 13

• 15

Tags

CCSS.8.G.A.5

Solve for x.

• 8

• 9

• 13

• 16

A student is trying to construct triangles using four different sets of angles. The angles in each set are given below. Which set will form a triangle?

• 45°, 65°, 70°

• 150°, 110°, 100°

• 50°, 50°, 50°

• 90°, 90°, 90°

Tags

CCSS.8.G.A.5

What MUST be true about the angles of any triangle?

• One angle must be 90 degrees

• All the angles sum to 180 degrees

• All the angles sum to 360 degrees

• All angles must be 90 degrees or larger

Tags

CCSS.8.G.A.5

Match the following

• 13 degrees

• x

• 94 degrees

• m<KGJ

• 30 degrees

• m<EFG

• 2

• m<KEJ

• 60 degrees

• m<FGE

Tags

CCSS.HSG.C.A.3

• 15

• 82

• 89

• 180

• 18

• 90

• 132

Tags

CCSS.8.G.A.5

Can a triangle have a base angle that is 100^o?

• Yes

• No

Answer explanation

A triangles interior angle sum is 180. If a triangle had a base angle of 100, then there must be another angle that is 100, bringing the sum already to more than 180.

Tags

CCSS.8.G.A.5

The angle measure of triangles is ALWAYS ___ degrees

Tags

CCSS.8.G.A.5

What is the measure of angle b?

• 36^o

• 56^o

• 63^o

• 117^o

Tags

CCSS.8.G.A.5