Angles Formed from Parallel or Perpendicular Lines

Inside the parallel lines; Opposite sides of the transversal; they are diagonal (non adjacent) from each other; congruent

• alternate interior angles

• alternate exterior angles

• same side exterior angles

• same side interior angles

Two lines that intersect to form four right angles

• Parallel

• Transversal

• Perpendicular

Same Side Interior Angles: Angles that are inside parallel lines on the same side of the transversal; they are supplementary

• True

• False

Alternate Exterior Angles are outside the parallel lines, they are diagonal from each other and are congruent

• True

• False

In a pair of parallel lines cut by a transversal, which pair of angles are always congruent?

• Corresponding angles

• Alternate interior angles

• Both A and B

• None of the above

If m∠6 = 50^o then m∠4 =

• 50^o

• 90^o

• 130^o

• 360^o

If you know that angle 4 ≅ angle 6, how can you prove PQ||RS?

• Converse of corresponding angle theorem

• Converse of alternate interior angles theorem

• Converse of same side interior angles postulate

• Converse of alternate exterior angles theorem

Mathematical Equivalence

ON