Preparing for Angle Proofs

​Review the Special Angle Pairs Below:

​* Complementary & Supplementary Angles may or may not be adjacent

​Linear Pairs:  2 angles form a linear pair if they are adjacent and they form a straight line

 

​

 

Linear Pair Postulate:  If 2 angles are a linear pair, then they are supplementary

​The measures of the two smaller adjacent angles add up to the largest angle measure.

​Perpendicular Lines

​Two lines are perpendicular if and only if they intersect to form one right angle.

Multiple Choice

Calculate m∠ABC.

• 45°

• 60°

• 105°

• 15°

Multiple Choice

What is the definition of supplementary angles?

• Two angles that measure 180 degrees

• A right angle

• Two angles that measure 90 degrees

• Two angles that have the same measure

Multiple Choice

What is the definition of complementary angles?

• 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

Multiple Choice

$$\angle1$$  and $$\angle2$$  are

• vertical

• adjacent

Multiple Choice

$$\angle1$$  and $$\angle4$$  are

• supplementary

• complementary

Multiple Choice

$$\angle1$$  and $$\angle2$$  are

• complementary

• supplementary

Multiple Choice

What are vertical angles?

• Angles that are adjacent to each other
• Angles that add up to 180°
• Angles that are opposite of each other when lines intersect
• Angles that add up to 90°

Multiple Choice

Identify the angle pair.

• Complementary angles
• Congruent angles
• Linear Pair
• Vertical Angles

Multiple Choice

Identify the angle pair.

• adjacent angles
• complementary angles
• linear pair
• vertical angles

Multiple Choice

Identify the angle pair.

• complementary angles
• linear pair
• supplementary 
• vertical angles

Multiple Choice

• Def. of Right Angle

• Angle Addition Postulate

• Def. of Perpendicular

• Def. of Supplementary Angles

Multiple Choice

• Definition of Supplementary Angles

• Angle Addition Postulate

• Def. of Complimentary Angles

• Vertical Angles Theorem

Multiple Choice

• Congruent Supplements Theorem

• Angle Addition Postulate

• Def. of Complimentary Angles

• Vertical Angles Theorem

Multiple Choice

• Def. of Complimentary Angles

• Linear Pair Postulate

• Def. of Supplementary Angles

• Def. of Congruence

Multiple Choice

• Def. of Complimentary Angles

• Linear Pair Postulat

• Def. Of Congruence

• Congruent Compliments Theorem

Multiple Choice

• Vertical Angles Theorem

• Angle Addition Postulate

• Def. of Complimentary Angles

• Compliment Theorem

Multiple Choice

• Def. Of Supplementary Angles

• Symmetrical Property

• Reflexive Property

• Def. of Congruent Angles

​Are you ready for Angle Proofs?

​Please be sure to revisit any slides to review what you need to know to be successful with angle proofs.

​

Re-attempt the questions as many times as needed to ensure you know this content.​