Exterior Angles of a Triangle

Question 1

Question 1

Revolt · Accepted Answer

The exterior angle, D, is supplementary to the adjacent interior angle, C. Together, they form a straight line, measuring 180°. The measure of the remote interior angles, A and B are equal to the measure of the exterior angle D.

Question 2

m∠2 = 30✔ 6090 degrees

Revolt · Accepted Answer

✔ 60

Question 3

m∠4 = 120✔ 150180 degrees

Revolt · Accepted Answer

✔ 150

Question 4

m∠6 = 3060✔ 90 degrees

Revolt · Accepted Answer

✔ 90

Question 5

Choose the equation that cannot be used to find the measure of angle B.

Revolt · Accepted Answer

m∠B = m∠D + 125°.

Question 6

Use the measurements provided in the diagram to determine the measure of B.mB = °

Revolt · Accepted Answer

119

Question 7

Choose the triangle in which angle 2 is not an exterior angle.

Revolt · Accepted Answer

Answer image: //media.edgenuity.com/EVresources/3108-09-05-20-01-task/mc001-3.jpg

Question 8

Which statements are true based on the given diagram? Select all that apply.

Revolt · Accepted Answer

∠2 is a remote interior angle to both exterior angles 4 and 5.; ∠3 is an adjacent interior angle to exterior ∠4.; ∠1 and ∠5 are supplementary angles.

Question 9

What is the m3? m3 = °

Revolt · Accepted Answer

105

Question 10

Cody found the sum of the exterior angles to be 380°. Did Cody make an error? If so describe it.

Revolt · Accepted Answer

Yes, Cody made an error drawing the exterior angles. The 145° angle is not an exterior angle.

Exterior Angles of a Triangle Answers

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