Review Lesson 2: Angles on a Straight Line

Supplementary Angles
Learning Intention
WALT calcualte the value of unkown angles within straight lines.

1

Do Now
A straight line measures _____ degrees. When two angles add up to a straight line, they are known as supplementary angles.

Here is video reminder, in case you need it.

Work Period 

Complete the questions below. You do not need to write the word degrees  or put the symbol after each answer. Just write the correct number. 

1

Calculate the value of angle x

1

Calculate the value of angle x

1

Calculate the value of angle x

1

Calculate the value of angle x

1

Calculate the value of angle x

1

Calculate the value of angle x

1

Calculate the value of x

1

Calculate the value of x

1

Calculate the value of x

1

Supplementary Angles

Do NowA straight line measures _____ degrees. When two angles add up to a straight line, they are known as supplementary angles.

Calculate the value of angle x

Calculate the value of angle x

Calculate the value of angle x

Calculate the value of angle x

Calculate the value of angle x

Calculate the value of angle x

Calculate the value of x

Calculate the value of x

Calculate the value of x

ClosingAn angle has a value of 65°. Find its supplementary angle.

Do Now
A straight line measures _____ degrees. When two angles add up to a straight line, they are known as supplementary angles.

Closing
An angle has a value of 65°. Find its supplementary angle.