What is your favourite computer game?
How long do you spend playing it?
Do you know that calculating angles within computer games and graphics is extremely important?
Interior and exterior angles are used in compiling 3D graphics.
Lets remind ourselves of how to find the angles.
The rule for finding internal angles
number of sides - 2 x 180 ÷ number of sides
e.g to find the internal angle of a pentagon
5 - 2 = 3
3 x 180 = 540° in the pentagon
540 ÷ 5 = 108° internal angle
The rule for finding external angles
Let us look at the rule for internal and external angles.
Find the interior and exterior angle of this heptagon.
7 - 2 = 5
5 x 180 = 900
900 ÷ 7 = 128.5°
360 ÷ = 51.5°
128.5° + 51.5° = 180°
Time to get off the computer games and get to work.