This document defines and describes different types of angles. It explains that an angle is formed when two lines intersect at a point and are measured in degrees. The main types of angles discussed are acute, right, obtuse, and reflex angles. Acute angles are less than 90 degrees, right angles equal 90 degrees, obtuse angles are greater than 90 but less than 180 degrees, and reflex angles are greater than 180 degrees. Various activities are also suggested to help teach and remember the different angle types.

1. What is an Angle?
When two lines meet (or intersect) at
a point, then an angle is formed

2. What is an angle measured in?
Degrees

3. Types of Angles?
Acute
Right-Angles
Straight angles
Obtuse
Reflex angles
An Acute Angle is less than
90°
revolutions
Equal to 90°
A Reflex Angle is more than 180° but
less than 360°
An Obtuse Angle is more
than 90° but less than 180°
A straight angle is 180 degrees
Are always 360°

4. Acute –r little and
cute
Obtuse –obese:
bigger
The square in
the angle
means it is a
right-angle.

5. I am a right-angle
True or False?
triangle?
TRUE

7. Angles
- bingo
- body angles
- celebrity shapes
Pictures of lots of things where angle is measured
Match angle to measurement
Cards where they have 30 secs to group them
Can the children think of ways to help remember these angles? Obtuse is an angle that is bigger than a right angle; it's 'fat' -
obtuse sounds like obese, which means fat. Acute is an angle smaller than a right angle; small things can be cute - a cute angle is
smaller than a right angle. A right angle is an exact corner; it's just righ
BINGO: IF I CALL OUT 30 DEGREES – MEASURE THE ANGLE – IF I CALL OUT
OBTUSE, ACUTE ETC.