# Properties of triangles?

May 11, 2018

Triangles are 3 sided polygon which have many different properties:-

#### Explanation:

=>The sum of all the angles inside or outside of a triangle always adds upto 180 degree.

=>Equilateral triangle is that type of triangle which has all its sides equal and the angles are each 60 degree.
Their central angle measure 120 degree.

=>An isosceles triangle has any two of its adjacent sides equal in length where their sum is always greater than the third side.

=>A scalene triangle has all of its three sides unequal in length.

=>Triangles can also be classified as:-
acute angled(less than 90 degree)
obtuse angled(more than 90 degree but less than 180 degree)
right angled(90 degree)

=>The sum of the squares of any two sides( the height and the base) is equal to the sum of the square of the hypotenuse in case of a right angled triangle.

=>the difference between the lengths of any two sides of a triangle is less than the length of the third side.

=>The exterior angle of a triangle is equal to the sum of the opposite interior angles.