Acute, Right, Obtuse, and Straight Angles

Discover the different types of angles and how to spot them in everyday life!

What Are Angles?

Angles are everywhere around us!
An angle is formed when two lines meet at a point. We measure angles in degrees (°). There are four main types of angles you should know: acute, right, obtuse, and straight angles. Let's explore each one!

Acute Angle

Less than 90°

Less than 90°
Like a pizza slice!

Right Angle

Exactly 90°

Exactly 90°
Like a book corner!

Obtuse Angle

Between 90°-180°

Between 90°-180°
Like a reclining chair!

Straight Angle

Exactly 180°

Exactly 180°
Like a straight line!

Let's Practice!

Example 1: Angle Hunt

Look around your room. Can you find examples of each type of angle? Click the angles above to see examples!

Example 2: Angle Identification

What type of angle is this?

Acute Right Obtuse Straight

Parent Tips 🌟

  • Angle scavenger hunt: Make a game of finding different angles around your home. Give points for each type found!
  • Hands-on learning: Use popsicle sticks or straws to create different angles and measure them with a protractor.
  • Real-world connections: Point out angles in everyday objects like doors (right angles), open books (acute or obtuse), or straight roads (straight angles).

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