All about Pi
History of Pi
Posts
Proof of Area Formula
Area of Triangle Area of Parallelogram Area of Trapezium from Triangle Area of Trapezium from Parallelogram Area of Circle
Short Test _Angles properties, Polygon and Equation involving Fractions
Comment: Q1 : Please take note of the comments that I have written in RED. Q2 : Please use SHORTEST method to find the required angles. For instant, to find r, use corresponding angles of // lines directly instead of alternate angles of parallel lines followed by vertically opposite angles . Comment: Try to make use of exterior angle method to find the number of sides of a regular polygon. Presentation wise, for either method, you are expected to FORM an equation and then solve it to find the number of sides.
