C1 Notes T5

C1 Notes T5

I can find measures of pairs of angles using angle relationships.

Theorems in Geometry

• Linear Pair: If two angles form a linear pair, then they are supplementary (add to 180)

• Vertical Angles: Vertical angles are congruent.

Complementary and supplementary angles

• Complementary angles add up to 90.

• Supplementary angles add up to 180

• What is the complement of < S?

• What is the supplement of < S?

Multiple Choice

What is the complement of

 $\angle R?$  

•  $22\degree$  

•  $68\degree$  

•  $112\degree$  

•  $158\degree$  

Multiple Choice

What is the supplement of

 $\angle R?$  

•  $22\degree$  

•  $68\degree$  

•  $112\degree$  

•  $158\degree$  

Multiple Choice

x and 140^o form

• a linear pair

• vertical angles

• adjacent angles

Multiple Choice

y and 140^o form

• a linear pair

• vertical angles

• adjacent angles

Multiple Choice

x =

• 40

• 140

• 180

Multiple Choice

y =

• 40

• 140

• 180

Multiple Choice

x =

• 60

• 90

• 120

• 180

Fill in the Blanks

Putting it all together

Find the measure of each missing angle. Be ready to share your answers.

Putting it all together

Find the measure of each missing angle. Be ready to share your answers.