Week 20 Math Vocabulary dodecagon – 12 sided polygon 360 degrees – sum of the measures of angles in a rectangle arc – unbroken part of a circle line segment – part of a line with 2 endpoints

bisector – ray, segment, point, or line that divides a figure into two congruent pieces addition property – if x + 5 = 10, then (x+5) + 3 = 10 + 3 complement – when added to another angle the sum must equal 90 degrees slope – rise over run

Test ~ Thursday, January 15, 2009 power of a product – for any number a, and all integers m and n, (ab)m = ambm prime number – a whole number greater than 1 whose only factors are 1 and itself Test ~ Thursday, January 15, 2009