Lines and Angles Addition

Front

What is an angle with two arcs called?

Back

An angle with two arcs is called a 'double arc angle'. In this context, it refers to the angle < EIR.

Front

What is the sum of angles in a straight line?

Back

The sum of angles on a straight line is 180°.

Front

What are perpendicular lines?

Back

Perpendicular lines are lines that intersect at a right angle (90°).

Front

What are intersecting lines?

Back

Intersecting lines are lines that cross each other at any angle.

Front

What are parallel lines?

Back

Parallel lines are lines in a plane that never meet; they are always the same distance apart.

Front

If two angles are complementary, what is their sum?

Back

The sum of two complementary angles is 90°.

Front

If two angles are supplementary, what is their sum?

Back

The sum of two supplementary angles is 180°.

Front

Solve for x: 2x + 10 = 26

Back

x = 8.

Front

What is the measure of a right angle?

Back

The measure of a right angle is 90°.

Front

What is the measure of a straight angle?

Back

The measure of a straight angle is 180°.