Question

important formulae & properties of geometry

Answer 1

Answer:

n-2×180

Step-by-step explanation:

n is no. of sides

Answer 2

Answer:

Quadrant system.

Collinear and concurrent lines.

Distance between two lines.

Slope of a line.

Equations of a line.

Equation of circle.

Supplementary angles, complementary angles.

Transversal theorems.