Review angles and triangles

ANGLES AND TRIANGLES REVIEW

By Sharon Rummins

LEARNING OBJECTIVES:
TO REVIEW

• types of angles and triangles

• complementary and supplementary angles

•   vertically opposite angles

•   angles in a revolution

•   angle sum in a triangle

•   the exterior angle theorem

TYPES OF ANGLES AND TRIANGLES

Multiple Choice

What type of angle is shown here?

• Acute

• Obtuse

• Reflex

• Right

Multiple Choice

What type of angle is shown here?

• Acute

• Obtuse

• Reflex

• Right

Multiple Choice

What type of angle is shown here?

• Acute

• Obtuse

• Reflex

• Right

Multiple Choice

What type of angle is this?

• acute angle

• right angle

• obtuse angle

• straight angle

Multiple Choice

I am an angle. I measure 111 degrees. What type of angle am I?

• acute angle

• right angle

• obtuse angle

• straight angle

Multiple Choice

What type of triangle is shown?

• Right

• Scalene

• Isosceles

• Equilateral

Multiple Choice

What type of triangle is shown?

• Isosceles

• Right

• Equilateral

• Scalene

Multiple Choice

What type of triangle is shown?

• Isosceles

• Right

• Equilateral

• Scalene

Multiple Choice

What type of triangle is shown?

• Isosceles

• Right-angled

• Equilateral

• Scalene

Multiple Choice

What type of triangle is shown?

• A right angled triangle

• An irregular triangle

• A rectangle

• An equilateral triangle

Multiple Choice

Which of the following is NOT possible?

• An obtuse isosceles triangle

• An acute isosceles triangle

• An obtuse equilateral triangle

• An acute equilateral triangle

COMPLEMENTARY AND SUPPLEMENTARY ANGLES

Multiple Choice

Name the angle pair. 

• Complementary
• Supplementary
• Obtuse

• Vertical

Multiple Choice

Name the angle pair. 

• Complementary
• Supplementary
• Linear Pair
• Vertical

Fill in the Blank

Find the missing angle.

Fill in the Blank

What is the measure of the missing angle?

Fill in the Blank

Find the missing angle.

Multiple Choice

What is an example of a pair of complementary angles?

• 45° and 48°

• 79° and 30°

• 150° and 32°

• 36° and 54°

VERTICALLY OPPOSITE ANGLES

Multiple Choice

Find the angle at x

• 105

• 75

• 180

• 85

Multiple Choice

What is the value of x?

• 53

• 67

• 57

• 133

Multiple Choice

What is the value of angle b?

• 140

• 40

• 50

• 30

ANGLES IN A REVOLUTION

Fill in the Blank

Find the unknown angle $$d\degree$$ .

Fill in the Blank

 Find the unknown angle $$k\degree$$ .

Multiple Choice

What is the measure of $$\angle r?$$

• $$28\degree$$  

• $$16\degree$$  

• $$44\degree$$  

• $$90\degree$$  

Fill in the Blank

What is the value of x?

Fill in the Blank

What is the value of y?

Fill in the Blank

What is angle q?

Fill in the Blank

Work out the size of the missing angle

Multiple Choice

Find the value of t

• -1
• 5
• 5.14
• 7

ANGLE SUM IN A TRIANGLE

Fill in the Blank

What is the size of the missing angle?

Fill in the Blank

What is the size of the missing angle?

Fill in the Blank

What is the size of the missing angle?

Fill in the Blank

Find the measure of the missing angle.

Multiple Choice

Find the measure of angle A.

• 44^o
• 96^o
• -14^o
• 63^o

Multiple Choice

Solve for x.

• 6
• 5
• -11
• 4

Fill in the Blank

Find x.

THE EXTERIOR ANGLE THEOREM

Explanation Slide...

Add up the 3 angles in the triangle and set equal to 180.Combine like terms to get 2x + 194 = 180.Subtract 194 from both sides to get 2x = -14Dived both sides by -2 to get x = -7Now to find plug in -7 for x:

Multiple Choice

What is the measure of $$\angle4$$  in the triangle shown?

• $$22\degree$$  

• $$148\degree$$  

• $$32\degree$$  

• $$117\degree$$  

Multiple Choice

Find angle BCD.

• 145°

• 113°

• 102°

• 78°

Multiple Choice

What is the measure of $$\angle3$$  in the triangle shown?

• $$240\degree$$  

• $$41\degree$$  

• $$79\degree$$  

• $$38\degree$$  

Multiple Choice

Find the value of x by using the exterior angle theorem.

• 12

• 8

• 15

• 9

Multiple Choice

What is the measure of angle A in the triangle?

• 116°

• 25°

• 62°

• 54°