__Different Types of Angles__

*Beautiful and useful blog on different types of angles, useful for the students of 5th on-word . Complete knowledge about different types of angles in mathematics*

__Different Types of Angles__

**Zero Angle:- Angle of 0**^{o} is called zero angle.

**Acute angle :- Angle greater than 0**^{o} but less
than 90^{o} is called acute angle.

**Right Angle:- Angle of 90**^{o} is called right angle.

**Obtuse Angle:- Angle greater than 90**^{o} but less
than 180^{o} is called obtuse angle.

**Straight Angle :- Angle of 180**^{o} is called
straight angle.

**Reflex angle :- Angle greater than 180**^{o} but less
than 360^{o} is called reflex angle.

**Complete angle:- Angle of 360**^{o} is called complete
angle.

**Linear Pair of Angles:- **

**When sum of two adjacent angles is ****180**^{o}, then pair of angles is called
a linear pair of angles .

**Adjacent Angles:- **

**Two angles with one common arm are called
adjacent angles.**

**Complementary Angles :- **

**If sum of any two angles is 90**^{o}
then angles are called complementary angles.

**Supplementary Angles:-**

** If sum of any two angles is 180**^{o}
then angles are called supplementary angles.

**Vertically Opposite Angles:- **

**When two lines intersect each other then vertically opposite angles are
formed. Vertically opposite angles are always equal.**

__Parallel Lines and Angles__

**When two or more parallel lines are intersected by a
transversal then :-**

**Alternate angles are equal:**

**Corresponding angles are equal:- **

**Alternate Exterior Angles are Equal:- **

** Co - interior Angles are Supplementary :- **

**Vertically Opposite angles are equal:- **

**Sum of three angles of a triangle is 180**^{o}

**Exterior angle of a triangle is equal to the sum of interior opposite angles.**

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