Angle Sum and Exterior Angles

Work out the size of the missing angle

• 55

• 90

• 125

• 305

Work out the size of the missing angle

• 58

• 62

• 68

• 118

Find the measure of the missing angle.

• 47

• 57

• 53

• 133

What is the measure of angle b?

• 36^o

• 56^o

• 63^o

• 117^o

What is the value of the missing angle?

• 105

• 80

• 55

• 25

Solve for x.

• 16

• 11

• 50

• 6

Two angles whose sum equals 180° are called...

• supplementary angles.

• obtuse angles.

• complementary angles

• a straight line.

So, if  and , we can substitute to get this equation:  .  Conclude

• Alternate Interior Angles

• Alternate Exterior Angles

• Same-side Interior Angles

• Corresponding Angles

• None of these