Visiting the Dubai Mall

Image: http://www.destination360.com/middle-east/united-arab-emirates/dubai-mall

Visiting the Dubai Mall

• The world’s largest shopping destination. • 1,200 retail outlets, two anchor department stores, and over 160 food and beverage outlets• The Dubai Mall is your ultimate destination for great shopping and entertainment in the city.

Click here for a virtual tour.

Image: http://www.destination360.com/middle-east/united-arab-emirates/dubai-mall

In this lesson you will learn how to find the measurement of an exterior angle by using

your knowledge of supplementary angles.

Let’s Review

Let’s Review

Supplementary angles

1 2

120°

60°

Let’s Review

Let’s Review

Adjacent angles

1 2

Let’s ReviewA Common Mistake

x° y°

B

A

C D

Let’s ReviewCore Lesson

A C

BExterior

Interior

Let’s ReviewCore Lesson

Find the value of x.

57° x°

B

A

C D

Let’s ReviewCore Lesson

52 + 27 + x = 180 73 + x = 180 x = 107

x + y = 180 y = 73

x° y°27°

52°

C

A

B D

Let’s ReviewCore Lesson

52 + 27 + x = 180

and

x + y = 180

x° y°27°

52°

C

A

B D

Let’s ReviewCore Lesson

(2x – 15) + (x – 5) = 148 3x – 20 = 148 3x = 168 x = 56

148°

(2x – 15)°

(x – 5)°

In this lesson you have learned how to find the measure of an exterior angle by using your knowledge of supplementary

angles.

Summary:

Let’s ReviewQuick Quiz

Find the value of x

112°

32°

x°

Question #1

Let’s ReviewQuick Quiz

Find the value of x and the measurement of each interior angle.

(100)°(2x + 27)°

(2x – 11)°

BA

C

Question #2

Let’s ReviewQuick Quiz

Find the value of x and each interior angle.

(x + 16)°(5x)°

(3x – 7)°

BA

C

Question #3