Angles and Parallel

Calculate the missing angle.

• 110º

• 80º

• 70º

• 60º

Calculate the missing angle.

• 132º

• 58º

• 48º

• 38º

Calculate the missing angle.

• 125º

• 135º

• 55º

• 50º

Calculate the missing angle.

• 110º

• 107º

• 73º

• 117º

If you know that angle 1 ≅ angle 7, 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

If ∠3 ≅ ∠7 which of the following can be concluded?

• r is parallel to s by converse of Alternate Interior Angles Thm.

• u is parallel to b by Converse of Consecutive Interior Angles Thm

• s is ⊥ u by Converse of Alternate Interior Angles Thm

• Nothing can be concluded

If you know that angle 1 ≅ angle 5, how can you prove PQ||RS?

• Converse of corresponding angle theorem

• Corresponding angle theorem

• Vertical angle theorem

• Interior angle theorem

If ∠1 ≅ ∠3, determine which lines, if any, must be parallel.

• m || n

• no lines are parallel

• p || q and m || n

• p || q

If you know that PQ||RS, how can you prove angle 4 ≅ angle 8

• Converse of corresponding angle theorem

• Corresponding angle theorem

• Vertical angle theorem

• Interior angle theorem