Measuring Angles

This is what kind of angle?

• obtuse
• right
• straight
• acute

Supplementary angles always add up to

If m∠1 = 30°, then m∠3 = 

• 30°
• 60°
• 150°
• undetermined

Find x.

• 1

• 5

• 93

• 175

If m∠RST = (12x -1)°, m∠RSU = (9x -15)°,

and m∠UST = 53°, find each measure.

• x = 13

  m∠RST = 155°

  m∠RSU = 102°

• x = 3

  m∠RST = 35°

  m∠RSU = 12°

• x = 22

  m∠RST = 263°

  m∠RSU = 183°

• x = 8

  m∠RST = 95°

  m∠RSU = 57°

Find m∠WXZ.

• 11

• 19

• 23

• 67

• x= -3

• x=3/17

• x=3

• x=9

The unit we measure angles in is called:

• degrees

• inches

• centimeters

• liters

_{What is the measure of the following angle?}  

• 21 degrees.
• 34 degrees.
• 70 degrees.
• 172 degrees.