FOA Chap 3 Parallel Lines and Transversals

Front

Lines that never intersect

Back

Parallel lines

Front

A line that crosses two or more lines

Back

Transversal

Front

Angles in matching corners when a transversal crosses parallel lines

Back

Corresponding angles

Front

Angles on opposite sides of the transversal, inside the parallel lines

Back

Alternate interior angles

Front

Angles on opposite sides of the transversal, outside the parallel lines

Back

Alternate exterior angles

Front

Angles on the same side of the transversal, inside the parallel lines

Back

Consecutive interior angles

Front

Consecutive interior angles property

Back

Sum to 180° when lines are parallel

Front

Find x: Corresponding angles 3x + 10 and 70°

Back

3x + 10 = 70 ⇒ x = 20

Front

Find x: Alternate interior angles 2x + 5 and 75°

Back

2x + 5 = 75 ⇒ x = 35

Front

Find x: Consecutive interior angles x + 30 and 2x + 10

Back

x + 30 + 2x + 10 = 180 ⇒ x = 40