Angles

A right angle is made up of 90 degrees.A straight line is made up of 180 degrees.If two lines intersect, the sum of the resulting four angles equals 360.

Geometric Figure	Area	Perimeter
Area of a Parallelogram	A = b x h	P =2(b + c)
Area of a Triangle		P = a + b + c
Area of a Trapezium		P = a + b + c + d
Area of a Circle	A = πr2	C = 2πr
Area of a Rectangle	A = l x w	P = 2(l + w)

Volume and Perimeter Surface Area Formulas

Geometric Figure	Volume	Surface Area
Volume of a Pyramid		A = 2bs + b2
Volume of a Cuboid / Rectangular prism	V = lwh	A = 2(wh + lw + lh)
Volume of a Cylinder	V = πr2h	A = 2πr2 + 2πrh
Volume of a Sphere		A = 4πr2
Volume of a Cone		A = πrs + πr2
Volume of a Triangular Prism		A = ah + bh + ch + bl