Parallel Lines, Transversals, and Triangles

Front

What are parallel lines?

Back

Lines in a plane that never meet and are always the same distance apart.

Front

What is a transversal?

Back

A line that crosses at least two other lines.

Front

What are alternate interior angles?

Back

Angles that are on opposite sides of the transversal and inside the two lines.

Front

What are same side interior angles?

Back

Angles that are on the same side of the transversal and inside the two lines.

Front

What is the sum of the angles in a triangle?

Back

180 degrees.

Front

If angle A = 63° and angle B = 88°, what is angle C?

Back

29°.

Front

What are vertical angles?

Back

Angles that are opposite each other when two lines cross.

Front

How do you identify supplementary angles?

Back

Two angles that add up to 180 degrees.

Front

What is the measure of angle 5 if it is alternate interior to angle 6 which measures 88°?

Back

88°.

Front

What is a transformation in geometry?

Back

A change in the position, size, or shape of a figure.