Angle Sum & Measure of Exterior Angles in Triangles Practice

What does "interior" mean?

• Outside

• Next to

• Inside

• Behind

Tags

CCSS.RI.7.4

CCSS.RI.8.4

CCSS.RL.7.4

CCSS.RL.8.4

CCSS.RL.9-10.4

What does "exterior" mean?

• Outside

• Next to

• Inside

• Behind

Tags

CCSS.RI.7.4

CCSS.RI.8.4

CCSS.RL.7.4

CCSS.RL.8.4

CCSS.RI.9-10.4

What is the sum of the interior angles of a triangle?

• 90°

• 180°

• 270°

• 360°

Tags

CCSS.8.G.A.5

How do you find the measure of an exterior angle of a triangle? Choose ALL correct answers.

• Add all the interior angles and divide by 2

• Multiply all the interior angles together

• Find the measure of the angle adjacent to the exterior angle, then subract that measure from 180

• Find the sum of the 2 remote interior angles

Tags

CCSS.8.G.A.5

Find the measure of x.

• 180°

• 57°

• 100°

• 43°

Tags

CCSS.8.G.A.5

Find the measure of the angle adjacent to the 100° angle.

• 43

• 80

• 180

• 57

Tags

CCSS.7.G.B.5

Find the measure of angle y.

• 43°

• 180°

• 123°

• 100°

Tags

CCSS.8.G.A.5

Look at the diagram. Which of the following is NOT true?

• m∠1 + 121 = 180; the sum of an interior angle of a triangle and the adjacent exterior angle is 180°.

• 121 + m∠2 + 33 = 180; the sum of the interior angles of a triangle is 180°.

• 33 + m∠1 = 92; the measure of an exterior angle of a triangle is equal to the sum of the measures of the non-adjacent interior angles (aka remote interior angles) of a triangle.

• 33 + m∠1 + m∠2 = 180; the sum of the interior angles of a triangle is 180°.

Tags

CCSS.8.G.A.5

Find the measure of angle 1.

• 180°

• 59°

• 92°

• 33°

Tags

CCSS.8.G.A.5

Find the measure of angle 2.

• 90°

• 33°

• 121°

• 88°

Tags

CCSS.7.G.B.5