Complementary and Supplementary Angles

The video tutorial introduces complementary and supplementary angles, explaining their differences and providing examples. Complementary angles sum to 90 degrees, while supplementary angles sum to 180 degrees. The instructor offers mnemonic devices to remember these concepts and provides practice problems for classifying angles. The video also covers solving equations to find missing angle measures, reinforcing the concepts of complementary and supplementary angles. The lesson concludes with a call to action for viewers to subscribe.

What is the main focus of today's lesson?

• Understanding parallel lines

• Learning about complementary and supplementary angles

• Studying algebraic equations

• Exploring geometric shapes

What is the sum of two complementary angles?

• 45 degrees

• 360 degrees

• 180 degrees

• 90 degrees

If two angles are 20 degrees and 70 degrees, what are they?

• Equal

• Complementary

• Neither

• Supplementary

What is the sum of two supplementary angles?

• 360 degrees

• 270 degrees

• 180 degrees

• 90 degrees

If two angles are 120 degrees and 60 degrees, what are they?

• Equal

• Supplementary

• Neither

• Complementary

How can you remember the difference between complementary and supplementary angles?

• Supplementary angles come first alphabetically

• Complementary angles are larger

• Complementary angles start with 'C' and are 90 degrees

• Supplementary angles are always equal

What is the sum of angles that are neither complementary nor supplementary?

• 90 degrees

• 180 degrees

• Any sum other than 90 or 180 degrees

• 360 degrees

If two angles add up to 180 degrees, what are they?

• Neither

• Supplementary

• Complementary

• Equal

What is the sum of 70 and 110 degrees?

• 90 degrees

• 180 degrees

• 200 degrees

• 160 degrees

If two angles are 41 degrees and 49 degrees, what are they?

• Supplementary

• Complementary

• Equal

• Neither