Classifying Angles by Measurement

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

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 type of angle has a measurement of 25^o?

• acute

• obtuse

• right

• straight

What type of angle is this?

• Acute Angle

• Right Angle

• Obtuse Angle

• Straight Angle

What type of angle has a measurement of 90^o?

• acute

• obtuse

• right

• straight

What type of angle has a measurement of 155^o?

• acute

• obtuse

• right

• straight