L (2.1), Properties of Parallel Lines

A solid arrow placed on two lines of a diagram indicate the lines are...............

• parallel Lines

• Perpendicular Lines

lines are not parallel

• 
• 

• vertical angles.

• angles are complementary

• Corresponding Angles

• vertical angles.

• Exterior Angles ( outside)

• Interior Angles ( Inside)

• vertical angles.

• Exterior Angles ( outside)

• Interior Angles ( Inside)

Type of angles

• complementary.

• supplementary

Type of angles

• complementary.

• supplementary

When two lines intersect they form two pairs of “opposite” angles called vertical angles.

• TRUE

• FALSE

Vertical angles are congruent.

Congruent means angles with the same measurement.

• TRUE

• FALSE

• Alternate Interior Angles

• Same-side Interior Angles