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### 20 Cards in this Set

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 Scalene Triangle is a triangle with no congruent sides Isosceles Triangle atleast two congruent sides equilateral triangle three congruent sides congruent same number of degrees in two or more angles angle bisector of a triangle line that bisects an angle(forming two congruent sides) and extends to the other side of triangle median of a triangle line that extends from a vertex to the median of the other side in a triangle prependicular bisector a line that bisects the center of a line in a triangle and creates a right angle altitude line from a vertex that extends to create two right angles obtuse triangle altitude extends outside of triangle hypotenuse segment of a triangle opposite a vertex Axiom an assumption applicable to mathematics in general. Postulate an assumption that applies to a particular branch of mathematics, such as geometry. Axiom 1 Things equal (or congruent) to the same or equal (or congruent) things are equal (or congruent) to each other. Axiom 2 A quantity may be substituted for its equal in any expression or equation.(substitution axiom) Axiom 3 The whole equals the sum of its parts. Axiom 4 Any quantity equals (is equivalent to) itself.(identity) Axiom 5 If equals are added to equals, the sums are equal.(Addition Axiom) Axiom 6 If equals are subtracted from equals, the differences are equal. (Subtraction Axiom) Axiom 7 If equals are multiplied by equals, the products are equal. Also, doubles of equals are equal. (Multiplication Axiom) Axiom 8 If equals are divided by equals, the quotients are equal. Also halves of equals are equal. (Division Axiom)