Angles and Triangles

What is the definition of a complementary angle?

• Two angles that have the same measure

• A straight line that equals 180 degrees

• Two angles that measure 90 degrees

• Two angles that measure 180 degrees

What is the definition of a supplementary angle?

• Two angles that measure 180 degrees

• A right angle

• Two angles that measure 90 degrees

• Two angles that have the same measure

What kind of angles are shown?

• Complementary

• Supplementary

Solve for x

• 20
• 25
• 120
• 180

Solve for x

• 5
• 90
• 25
• 10

Angles 1 and 2 are what type of angles?

• Supplementary
• Complementary
• Vertical
• Obtuse

Find the value of x.

• 18°
• 28°
• 38°
• 118°

Find what the value of x.

• 118
• 108
• 28
• 58

Find the value of x.

• 15
• 16
• 18
• 19

Tell whether the angles are complementary or supplementary. Then find the value of x.

• Complementary; x=25
• Complementary; x=5
• Supplementary; x=25
• Supplementary; x=5