Interior & Exterior Angles of Triangles

Front

The Triangle Sum Theorem states that the sum of all angles in a triangle is ______.

Back

180°

Front

Find the measure of the angle in a triangle if the other two angles are 70° and 40°. What is the measure of the third angle?

Back

70°

Front

Which set of angles can form a triangle? 1) 45°, 65°, 70° 2) 150°, 110°, 100° 3) 50°, 50°, 50° 4) 90°, 90°, 90°

Back

1) 45°, 65°, 70°

Front

Solve for x if the angles of a triangle are x, 60°, and 50°.

Back

x = 70°

Front

What is an exterior angle of a triangle?

Back

An exterior angle is formed by one side of the triangle and the extension of an adjacent side.

Front

What is the relationship between an exterior angle and the two remote interior angles?

Back

The exterior angle is equal to the sum of the two remote interior angles.

Front

Define an interior angle of a triangle.

Back

An interior angle is an angle formed inside the triangle by two sides.

Front

What is the measure of each angle in an equilateral triangle?

Back

Each angle measures 60°.

Front

If one angle of a triangle is 90°, what type of triangle is it?

Back

It is a right triangle.

Front

What is the definition of a corresponding angle?

Back

Corresponding angles are angles that are in the same position on two parallel lines cut by a transversal.