# Areas

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## Basic formulas for Areas

#### 1) Triangle

6) Radius of circumcircle where a, b, c are the sides of the triangle and A is the area of the triangle.
7) Radius of incircle where A is the area of the triangle and s is the semi perimeter.
8) Point where medians of a triangle meet is known as the Centroid. Centroid divides a median in the ratio 2:1.

9) Median divides a triangle into two parts of equal areas.

10) Sum of the angles of a triangle is 180°.

11) According to Triangle Inequality, Sum of two sides of a triangle is always greater than the third side.