Angles Review

Angles Review

Standard

NC.7.G.5

Use facts about supplementary, complementary, vertical, and adjacent angles in a multi-step problem to write and solve equations for an unknown angle in a figure.

Drag and Drop

20 + x = 90

x = ​

Placeholder

x/2 + 5 = 15

x = ​

Placeholder

Drag these tiles and drop them in the correct blank above

70

20

45

30

10

50

-15

2/5

​Parts of an angle

​Angles that measure between 0° and 180° are classified as acute, right, obtuse, or straight.

Angle Types

​There are several ways to name an angle

1. Place the center point of the protractor on the vertex of the angle and align one side of the angle with 0°

2. Read the number of degrees where the second side of the angle crosses the protractor

​

Measuring Angles

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1. How many degrees is this angle

2. Classify the angle

Angle 1

1. How many degrees is this angle

2. Classify the angle

Angle 2

1. ​How many degrees is this angle

2. Classify the angle

Angle 3

Multiple Choice

What type of angle is this? 

• acute
• obtuse
• right
• big

Multiple Choice

What type of angle is shown?

• acute
• obtuse
• right
• straight

Match

Match the angle with its description

• ACUTE ANGLE

• OBTUSE ANGLE

• RIGHT ANGLE

• STRAIGHT ANGLE

LESS THAN 90 DEGREES

MORE THAN 90 DEGREES

EQUAL TO 90 DEGREES

EQUAL TO 180 DEGREES

• LESS THAN 90 DEGREES

• MORE THAN 90 DEGREES

• EQUAL TO 90 DEGREES

• EQUAL TO 180 DEGREES

Multiple Choice

What type of angle is shown?

• acute
• obtuse
• right
• straight

Multiple Choice

Which is NOT a name of this angle?

• <HJK
• <KJH
• <J
• <JHK

Multiple Choice

Find the value of x.

• 18°
• 28°
• 38°
• 118°

Multiple Choice

What is the area of this triangle?

• 30 units²

• 35 units²

• 60 units²

• 70 units²

Multiple Choice

What is the area of the rectangle?

• 42 square centimeters

• 40 square centimeters

• 40 centimeters

• 42 centimeters

• 13 centimeters