Lines and Triangles: Easy

Get comfortable with angle relationships: supplementary and vertical angles, the triangle angle sum, isosceles properties, and the exterior angle theorem.

0 of 5 answered Score: 0%

Question 1

A triangle has two angles measuring 50° and 70°. What is the measure of the third angle?

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Two straight lines intersect, forming four angles. One of the angles measures 42°. What is the measure of the angle directly across from it?

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An exterior angle of a triangle measures 110°. One of the two non-adjacent interior angles measures 45°. What is the measure of the other non-adjacent interior angle?

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An isosceles triangle has a vertex angle of 40°. What is the measure of each base angle?

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Two angles are supplementary. One angle measures 65°. What is the measure of the other angle?

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