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### How to study your flashcards.

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### 20 Cards in this Set

• Front
• Back
 triangle a three sided figure quadrilateral a four sided figure pentagon a five sided figure hexagon a six sided figure octagon an eight sided figure right triangle a triangle with one right angle acute triangle a triangle with ALL acute angles obtuse triangle a triangle with ONE obtuse angle scalene triangle a triangle with NO congruent sides or angles isosceles triangle a triangle with TWO congruent sides and angles acute angle measures less than 90 degrees obtuse angle measures more than 90 degrees right angle measures 90 degrees straight angle measures 180 degrees and makes a straight line equilateral triangle a triangle with ALL congruent sides and angles parallelogram a quadrilateral with opposite sides congruent and parallel rhombus a parallelogram with ALL congruent sides square a parallelogram with ALL congruent sides and angles, all angles are 90 degrees rectangle a parallelogram with opposite sides congruent and parallel AND all 90 degree angles trapezoid a quadrilateral with ONE pair of opposite sides parallel