Classifying Angles CC1

Classifying Angles

By Courtney Kuschel

Multiple Choice

What angle is this?

• acute

• right

• obtuse

• straight

Multiple Choice

What angle is this?

• right

• acute

• straight

• obtuse

Multiple Choice

What angle is this?

• right

• acute

• straight

• obtuse

Multiple Choice

What angle is this?

• right

• acute

• straight

• obtuse

Complementary vs. Supplementary

Supplementary angles are two angles with a sum of 180º.

Complementary angles are two angles with a sum of 90º.

Math Response

These two angles are complementary (have a sum of 90º). What is the value of the missing angle?

Type answer here

Correct Answer: 30

Deg^°

Rad

Math Response

These two angles are complementary (have a sum of 90º). What is the value of the missing angle?

Type answer here

Correct Answer: 62

Deg^°

Rad

Math Response

These two angles are complementary (have a sum of 90º). What is the value of the missing angle?

Type answer here

Correct Answer: 43

Deg^°

Rad

Math Response

These two angles are supplementary (have a sum of 180º). What is the value of the missing angle?

Type answer here

Correct Answer: 113

Deg^°

Rad

Math Response

These two angles are supplementary (have a sum of 180º). What is the value of the missing angle?

Type answer here

Correct Answer: 145

Deg^°

Rad

Math Response

These two angles are supplementary (have a sum of 180º). What is the value of the missing angle?

Type answer here

Correct Answer: 64

Deg^°

Rad

Multiple Choice

Angle A is 124º and Angle B is 56º. Are these complementary or supplementary?

• Complementary

• Supplementary

Adjacent Angles

Angles that share that same vertex and one side are referred to as adjacent angles.  “Adjacent” means “next to.”  For two angles to be adjacent, they must:

1. Have a common (shared or same) side.

2. Have a common vertex (a common starting point).

3. Have no overlap. 

Multiple Choice

Are these two angles adjacent? Do they have a common side and a common vertex?

• Yes, they are adjacent.
• No, they are not adjacent.

Multiple Choice

Are these two angles adjacent? Do they have a common side and a common vertex?

• Yes, they are adjacent.
• No, they are not adjacent.

Multiple Choice

Are these two angles adjacent? Do they have a common side and a common vertex?

• Yes, they are adjacent.
• No, they are not adjacent.

Multiple Choice

Are these two angles adjacent? Do they have a common side and a common vertex?

• Yes, they are adjacent.
• No, they are not adjacent.

Multiple Choice

Are these two angles adjacent? Do they have a common side and a common vertex?

• Yes, they are adjacent.
• No, they are not adjacent.

Multiple Choice

Are these two angles adjacent? Do they have a common side and a common vertex?

• Yes, they are adjacent.
• No, they are not adjacent.

Multiple Choice

Are these two angles adjacent? Do they have a common side and a common vertex?

• Yes, they are adjacent.
• No, they are not adjacent.

Multiple Choice

Are these two angles adjacent? Do they have a common side and a common vertex?

• Yes, they are adjacent.
• No, they are not adjacent.

Multiple Choice

Are these two angles adjacent? Do they have a common side and a common vertex?

• Yes, they are adjacent.
• No, they are not adjacent.

Multiple Choice

Are these two angles adjacent? Do they have a common side and a common vertex?

• Yes, they are adjacent.
• No, they are not adjacent.

Vertical Angles

Angles formed by two intersecting lines that are not adjacent are called vertical angles.  In the diagram below, angles 1 and 2 are vertical angles. Vertical angles have the SAME measure.

Multiple Choice

Angle 3 and Angle 4 are Vertical Angles. Angle 3 has a measure of 120º. What is the measure of Angle 4?

• 90º
• 120º
• 60º
• 150º

Multiple Choice

Angle 1 and Angle 2 are Vertical Angles. Angle 1 has a measure of 54º. What is the measure of Angle 2?

• 36º
• 90º
• 72º
• 54º
• 108º

Time to Show What You Know!

Multiple Choice

What is the measure of Angle 2?

• 75°
• 45°
• 105°

• 60°

Multiple Choice

What is the measure of Angle 2?

• 70°
• 55°
• 45°
• 90°

Multiple Choice

What is the measure of Angle 2?

• 30°
• 63°
• 90°
• 45°

Multiple Choice

What is the measure of Angle 2?

• 90°
• 150°
• 120°
• 180°