Algebra with parallel lines

Front

What are parallel lines?

Back

Parallel lines are lines in a plane that never meet. They are always the same distance apart and have the same slope.

Front

What is a transversal?

Back

A transversal is a line that intersects two or more lines at different points.

Front

If two parallel lines are cut by a transversal, what can be said about the corresponding angles?

Back

Corresponding angles are equal.

Front

If two parallel lines are cut by a transversal, what can be said about the alternate interior angles?

Back

Alternate interior angles are equal.

Front

If two parallel lines are cut by a transversal, what can be said about the same-side interior angles?

Back

Same-side interior angles are supplementary (add up to 180 degrees).

Front

Solve for x: If angle A = 3x + 10 and angle B = 2x + 40, and A and B are corresponding angles, what is x?

Back

x = 10.

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 two lines are parallel, what can be said about their slopes?

Back

The slopes of parallel lines are equal.

Front

If angle 1 = 70 degrees and angle 2 is a corresponding angle, what is angle 2?

Back

Angle 2 = 70 degrees.

Front

If angle 3 and angle 4 are alternate interior angles and angle 3 = 50 degrees, what is angle 4?

Back

Angle 4 = 50 degrees.