Yr10 Summary Angle Properties

Complementary angles...

• ...add up to 180°

• ...add up to 90°

• ...are equal to each other

• ...are opposite of each other when lines intersect.

Supplementary angles...

• ...add up to 180°

• ...add up to 90°

• ...are equal to each other

• ...are opposite of each other when lines intersect

Find the value of x. 

• 17
• 28
• 68
• 39.5

Find the value of x. 

• 14
• 112
• 108
• 104

If ∠C and ∠D are supplementary, and the measure of ∠D is 45°, what is the measure of ∠C?

• 135
• 45
• 125
• 90

Vertical angles...

• ...are adjacent to each other

• ...add up to 180°

• ...are opposite of each other when lines intersect

• ...add up to 90°

 $\angle8$  and  $\angle6$   are __.  

• Alternate Interior Angles

• Alternate Exterior Angles

• Consecutive Interior Angles

• Corresponding Angles

• Linear Pair Angles

 $\angle3$  and   $\angle7$  are ___.  

• Alternate Interior Angles

• Alternate Exterior Angles

• Consecutive Interior Angles

• Corresponding Angles

• Linear Pair Angles

 $\angle4$  and  $\angle8$  are ___.  

• Alternate Interior Angles

• Alternate Exterior Angles

• Consecutive Exterior Angles

• Corresponding Angles

• Linear Pair Angles

 $\angle5$  and  $\angle6$  are ___.  

• Alternate Interior Angles

• Alternate Exterior Angles

• Consecutive Exterior Angles

• Corresponding Angles

• Linear Pair Angles