Sum of Interior Angles of Polygon = (n-2)(180) n = number of sides of a polygon
Square: A = a2 Rectangle: A = lw Parallelogram: A = bh Trapezoid: A = .5(a+c)h, where a and c are the lengths of the parallel sides
dArea: A = πr2 Circumference: C = 2πr or C=π Area of Sector = (x/360)πr2
Square: P = 4l Rectangle: P = 2w + 2l Parallelogram: P = 2b + 2a, where a and b are the lengths of the non-parallel sides Circle: P = 2πr
VArea: A = .5bh Pythagorean Theorem: A2 + B2 = C Sum of interior angles must add up to 180 The sum of any 2 sides of a triangle must be greater than the 3rd side of a triangle. The exterior angle theorem states: Angle EFG + Angle EGF = Angle DEG
Cube: V = a3 where a is the length of a side Rectangular Solid: V = hwl Cylinder: V = πr2h
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