Angles Introduction

INTRO TO ANGLES

Key Concepts & Vocabulary

MEASURING ANGLES

• Angles are measured with DEGREES

• The measurement is usually written INSIDE the corner it applies to.

Multiple Choice

1) The batter hit the ball at an angle of 52 ______.

• feet

• yards

• meters

• degrees

• miles per hour

NAMING ANGLES

Multiple Choice

2) If $$m\angle A=m\angle B$$  then what do you know?

• angle 'm' is less than angle 'A' and angle 'B'

• angle 'A' is less than angle 'B'

• angle 'A' and angle 'B' are the same size

• angle 'A' and angle 'B' are both greater than angle 'm'

3 LETTER NAMES

Fill in the Blanks

3) What is the THREE LETTER name for  $\angle3$  ?

Multiple Choice

4) Which of these is NOT AN ACTUAL ANGLE in the image?

• $$\angle ACD$$

• $$\angle BCE$$

• $$\angle ECB$$

• $$\angle DBC$$

• $$\angle ECD$$

Multiple Choice

5) Which of these is NOT AN ACTUAL ANGLE in the image?

• $$\angle QVT$$  

• $$\angle SRQ$$  

• $$\angle QSR$$  

• $$\angle VTS$$

RIGHT ANGLES

• They're exactly 90^o

• They look like a perfect T or L

• See a square in the corner? (right angle!)

Multiple Choice

6) Based on the image, what is  $$m\angle R$$  ?

• 150 $$\degree$$  

• 90 $$\degree$$  

• 180 $$\degree$$  

• It's impossible to tell.

Acute Angles

An angle that measures less than 90 degrees.

Multiple Choice

Which type of angle is this?

• Acute

• Obtuse

• Right

Multiple Choice

Which one is a right angle?

Obtuse Angles

More than 90 degrees.

Multiple Choice

What types of angle is this?

• Obtuse

• Acute

• Right

• Straight

Multiple Choice

Which type of angle is this?

• Acute

• Obtuse

• Right

Multiple Choice

Which type of angle is this?

• Acute

• Obtuse

• Right

Multiple Choice

Which type of angle is this?

• Acute

• Obtuse

• Right

Multiple Choice

Which one is a right angle?

Multiple Choice

Which one is an obtuse angle?

Multiple Choice

Which one is an acute angle?