Practice questions available in **McGraw Hill Math Grade 6 Answer Key PDF** **Lesson 22.2 Types of Angles **will engage students and is a great way of informal assessment.

## McGraw-Hill Math Grade 6 Answer Key Lesson 22.2 Types of Angles

**Exercises**

**IDENTIFY**

Question 1.

Are the two angles shown below supplementary?

Answer:

Two angles are called supplementary when their measures add up to 180 degrees.

40 + 140 = 180 degrees

Hence the angles shown in the above figure is supplementary.

Question 2.

Are the two angles below complementary?

Answer:

When the sum of two angles is equal to 90 degrees, they are called complementary angles.

25 + 65 = 90 degrees

Hence the angles shown in the above figure is complementary.

Question 3.

Are the two angles A and B supplementary?

Answer:

Two angles are called supplementary when their measures add up to 180 degrees.

The sum of the two angles is 180 degrees.

Question 4.

Are the two angles supplementary?

Answer: No the angles are not supplementary.

Question 5.

Are the two angles CFD and DFE complementary? Why, or why not?

Answer: Yes, two angles CFD and DFE complementary. Because the sum of the two angles is complementary.

Question 6.

Name the two angles below, and determine if they are supplementary.

Answer:

Two angles are called supplementary when their measures add up to 180 degrees.

Question 7.

Determine if the two angles are complementary.

Answer:

When the sum of two angles is equal to 90 degrees, they are called complementary angles.

58 + 32 = 90 degrees

Hence the angles shown in the above figure are complementary.

Question 8.

What size angle would you have to add to make this a right angle?

Answer:

Given angle = 30

Right angle = 90 degrees

30 + x = 90

x = 90 – 30

x = 60

So to make this a right angle we have to add 60 degrees.

Question 9.

In the figure below, list three sets of vertical angles.

Answer:

There are two pairs of vertical angles with intersecting lines, they are across from each other.

∠2 and ∠4

∠1 and ∠3

∠3 and ∠5

∠4 and ∠6

∠6 and ∠8

∠5 and ∠7

Question 10.

Of the angles labeled below, which ones are supplementary?

Answer:

∠5 and ∠2 are the supplementary angles.

Because the sum of two angles is 180 degrees.

Question 11.

List two pairs of vertical angles in the figure.

Answer:

There are two pairs of vertical angles with intersecting lines, they are across from each other.

∠2 and ∠4

∠1 and ∠3

Question 12.

What type of angles are C and B?

Answer:

∠C and ∠B are the supplementary angles.

Question 13.

List two pairs of vertical angles in the figure below.

Answer:

∠ABD and ∠CBE are the vertical angles.

Question 14.

What are the two angles in the figure below? Are the angles complementary? Assume that angle ACB is 90 degrees.

Answer:

The above figure is a right angle.

When the sum of two angles is equal to 90 degrees, they are called complementary angles.

Hence the angles shown in the above figure is complementary.