DMS Exterior Angles/Triangles Review

Front

What is an exterior angle in a triangle?

Back

An exterior angle is formed by one side of a triangle and the extension of an adjacent side. It is equal to the sum of the two remote interior angles.

Front

Define remote interior angles.

Back

Remote interior angles are the two angles inside a triangle that are not adjacent to a given exterior angle.

Front

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

Back

The sum of the interior angles of a triangle is always 180 degrees.

Front

If one angle of a triangle is 60 degrees, what is the sum of the other two angles?

Back

The sum of the other two angles is 120 degrees.

Front

Solve for x: 10x - 6x = 23 + 5.

Back

x = 7.

Front

What is the measure of angle b if the exterior angle is 180 degrees?

Back

Angle b = 34 degrees.

Front

What is a corresponding angle?

Back

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

Front

If angle d is an exterior angle, what can be said about its relationship to the remote interior angles?

Back

Angle d is equal to the sum of the two remote interior angles.

Front

What is the measure of an angle if its supplement is 90 degrees?

Back

The measure of the angle is 90 degrees.

Front

Solve for the missing angle: ? + 60 = 180.

Back

The missing angle is 120 degrees.