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