# Angles Mathematics Types of Angles

**Class: Pry 4**

**Subject: Mathematics**

**Topic:Angles**

**Content:**

**An angle is the figure**

**formed by two rays, called the sides of the**

**angle, sharing a common endpoint, called**

**the vertex of the angle.**

**Types of angles**

**1. Acute Angle:**

**An angle whose measure is less than 90° is**

**called an acute angle .**

**2. Right Angle:**

**An angle whose measure is 90° is called right**

**angle .**

**3. Obtuse Angle:**

**An angle whose measure is greater than 90° but**

**less than 180° is called an obtuse**

**angle .**

**4. Straight Angle:**

**An angle whose measure is 180° is called a**

** straight**

**angle .**

**A straight angle is equal to two right angles.**

**5. Reflex Angle:**

**An angle whose measure is more than 180° but**

**less than 360° is called a reflex angle.**

**6.Full angle or angle at a point:This is an angle equal to 360 degree exactly.**

**Evaluation**

**1.What is an angle?**

**2.Explain the following types of angles**

**i.Acute angle ii.right angle iii.Obtuse angle. iv.straight angle v.reflex angle vi.full angle.**