point {Ans: a dot that represents a location in space}strategy {Ans: a way of solving a problem}demonstrate {Ans: show}obtuse angle {Ans: angle that is more than 90 degrees}congruent {Ans: Having the same size and shape}protractor {Ans: a tool used to measure angles}angle {Ans: A figure formed by two rays with a common endpoint}factor {Ans: the numbers multiplied together to get a product}prime number {Ans: the only factors of this number are one and itself}multiple {Ans: the number we get when we multiply one number by another}ray {Ans: A part of a line, with one endpoint, that continues without end in one direction}straight angle {Ans: 180 degree angle}formula for perimeter {Ans: add up all the sides}trapezoid {Ans: a closed shape that has at least one pair of parallel lines}product {Ans: the answer to a multiplication problem}perimeter {Ans: the distance around an object}symmetry {Ans: having the same shape, size, and position on both sides of a dividing line}sum {Ans: the answer to an addition problem}convert {Ans: to change}difference {Ans: the answer to a subtraction problem}