Angle Measurement Introduction

This is what kind of angle?

• obtuse

• right

• straight

• acute

Vertical angles are always

• acute

• total 180 degrees

• congruent (equal measures)

• adjacent angles

Supplementary angles always add up to

What is the vertical angle to angle 4?

• Angle 2

• Angle 6

• Angle 8

• Angle 7

Given the following two parallel lines that have been cut by a transversal. True or False, \angle6 and \angle4 are vertical angles?

• True

• False

Which pair of angles must be supplementary so that r is parallel to s?

• ∠2 and ∠3

• ∠5 and ∠6

• ∠4 and ∠10

• ∠6 and ∠14

What value of x proves that line p is parallel to line r?

• 14

• 12.5

• 15

• 25

If ∠5 ≌∠7, which of the following can be concluded?

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

• u is parallel to v by Converse of Corresponding Angles Thm

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

• v ⊥ r by Converse of Alternate Exterior Angles Thm