Matching Pairs Geometry Formulas (D)Online version 7th grade geometry by STEPHANIE GREGORY 1 Vertical Angles 2 AAA 3 Supplementary Angles 4 Volume of a rectangular prism 5 Area of a semi-circle 6 Complementary Angles 7 Circumference of a Circle 8 SSS 9 Area of a rectangle or square 10 Volume of a triangular prism 11 Circumference of a semi-circle 12 Area of a triangle 13 Area of a Circle 2 or more angles that equal 180 degrees because together they form a straight line. Pi x radius squared length x width Angles that are on opposite sides of the figure. They are equivalent. 1/2 x base x height x height all angles together = 180 degrees a + b > c 1/2 x pi x radius squared 1/2 x base x height 1/2 x pi x diameter 2 or more angles that have a sum of 90 degrees because together they form a right angle Pi x diameter length x width x height