What is the value of B?

Arpitha lined up the interior angles of the triangle along the line below. What is the measure of angle A?

Which statement is true regarding the angles in the figure below?

What is the name of an interior angle of a triangle that is not adjacent to a given exterior angle of the triangle?
Parallel lines s and t are cut by a transversal, r, as shown. What is the measure of angle 1?

The triangles below are similar. In each triangle there is a angle and a right angle. What is the measure of the third angle in each triangle?

Lines and are parallel. Which angles are congruent?

Based on the side lengths alone, could the triangles be similar?

What is the measure of angle B in degrees?

The two triangles below are similar. Which pair are corresponding sides?

Lamar wanted to explain why the measure of angle 5 is equal to the sum of the measures of angles 1 and 3. Which geometry concepts should be used in Lamar’s work?

Which set of angle measures could be the measures of the interior angles of a triangle?
In the diagram, which angle is an alternate exterior angle with angle 4?angle

Triangles 1 and 2 are similar. What ratio relates a side length of triangle 1 to the corresponding side length of triangle 2? Fill in the box to complete the ratio.

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