How do you calculate the sum of all internal angles of a regular polygon?
Use the formula (n-2)*180 where n is the number of sides on the polygon.
BC
Related Maths GCSE answers
All answers ▸You are shown a diagram of a right angled triangle, with the hypotenuse labelled c and the other sides labelled a and b. If a is 7m long and c is 10m long, what is the length of b?
When using trigonometry to calculate side lengths/angles, how do you know which identity to use?
Solve the equation 3x^(2)-7x+3 giving your answer to three significant figures.
Solve these pair of simultaneous questions: 3x+2y=17 4x-y=30