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### 21 Cards in this Set

• Front
• Back
 a parallelogram -both pairs of opposite sides parallel -oppsite angles congruent -opposite sites congruent -adjacent angels supp -diagonals bisect eachother -one diagonal creates two congruent triangles a rectangle -all properties of a parallelogram -one right angle--> all right angles -diagonals are congruent a rhombus -properties of a parallelogram -all sides congruent -interection of diagonals is perpendicular -both diagonals biusect rhomubs angles -diagonals create 4 right triangles a square -prop of a parallelogram -prop of rectangle -prop of a rhomubs -diagnoals-four isosceles right triangles a kite -two distinct pairs of consecutive sides -diagonals perpendicular -one diagonal bisects the opposite angles -one diagonal bisected a trapezoid -exactly one pair of parallel sides (bases) an isosceles trapezoid -all prop of a trapezoid -non parallel sides congruent -lower base angles congruent -upper base angles congruent -diagonals are congruent if-then statement is hypothesis then conculsion...conditional statement hypothesis if then that is true conclusion part of the if-then that must be true if the hypothesis is true linear pair of angles a pair of adjacent angles wholes non-common rays form a straight line linear pair property if two angles are linear pair then the sum of angles is 180 vertical angles vertical angles are angles opposite one another at the intersection of two lines vertical angles theorem vertical angels congruent supplementary angles sum 180 complementary angles 90 degrees interior angles, exterior angels alternate interior angles, exc. only if two parallel lines cut by a transversal acute angle less than 90 obtuse measure greater then 90 and less than 180 converse re-statement of an if-then statement where hypothesis and conclusion switched triangle inequality theorem sum of the lengths of any two sides oc a triangle is greater than the length of the third side