click below
click below
Normal Size Small Size show me how
Geometry Equations
Different equations for geaometry
Question | Answer |
---|---|
(n-2)180 | sum of interior angles |
(n-2)180/n | each interior angle of a regular polygon |
360 | sum of exterior angles |
360/n | each exterior angle regular polygon |
Side length of poly1/Side length of poly2 | Similar ratio or scale factor via sides |
Perimeter of Poly1/Perimeter of poly2 | Similar ratio or scale factor via perimeter |
Area of poly1/Area of poly2 a^2/b^2 | Similar ratio or scale factor via area |
A= 1/4 (squareroot of 35) ^2 | Area of triangle |
A= 1/2 aP | Area of Polygon |
2(pie)r | Circumference |
(pie)r^2 | Area of a circle |
Arc length/2(pie)r = arc measure (degrees)/360 | measure of sector |
area sector/(pie)r^2 = arc measure/360 | measure of circumference |