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Read,3 minutes

An angle is a type of **geometric shape** that is made by joining the ends of two rays together. The angle can also be shown by the **three** letters of the shape that makes the angle. The angle is in the **middle** letter (i.e.its vertex). Most of the time, Greek letters like \(β \ , \ α \ , \ φ\), etc. are used to show angles.

In Geometry, there are mostly **six** different kinds of angles. All of the angles and their properties are named as follows:

- An
**acute**angle is between \(0°\) and \(90°\). - A
**right**angle is an angle that is**exactly**\(90\) degrees. - The
**obtuse**angle is between \(90°\) and \(180°\). - A
**straight**angle is an angle that is**exactly**\(180\) degrees. - The angle that is
**greater**than \(180\) degrees and**less**than \(360\) degrees is called the**reflex**angle.

When the rotation from the **starting** side to the **end** side is \(\frac{1}{360}\) of the **full** rotation, the angle is said to be \(1°\).

**1) **

**2) **

**3) **

**4) **

**5) **

**6) **

**7) **

**8) **

**9) **

**10) **

1) \(\color{red}{144^o } \)

2) \(\color{red}{60^o } \)

3) \(\color{red}{102^o } \)

4) \(\color{red}{96^o } \)

5) \(\color{red}{54^o } \)

6) \(\color{red}{138^o } \)

7) \(\color{red}{48^o } \)

8) \(\color{red}{90^o } \)

9) \(\color{red}{132^o } \)

10) \(\color{red}{42^o } \)

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