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