MathIsimple

Geometry: Angles

Identify and measure angles - acute, right, obtuse, and straight!

4th Grade
🎮 Angle Identifier
45°
What type of angle?
1. Types of Angles

📐 Four Main Types

Angles are classified by their measure in degrees!

Acute
< 90°
Sharp corner
Right
= 90°
Perfect corner
Obtuse
90° - 180°
Wide corner
Straight
= 180°
Line

💡 Memory Tip:

Acute = sharp (like a cute little point), Obtuse = wide (obviously wide!)

2. Measuring Angles
3. Complementary & Supplementary
4. Estimating Angles
5. Real-World Applications

Practice Time!

Practice Quiz
10
Questions
0
Correct
0%
Score
1
A 45° angle is what type?
2
A 90° angle is called:
3
A 120° angle is what type?
4
How many degrees in a straight line?
5
How many degrees in a full turn?
6
Two angles that add to 90° are:
7
Two angles that add to 180° are:
8
If one angle is 35°, its complement is:
9
How many right angles in a rectangle?
10
Lines that form 90° angles are: