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### 10 Cards in this Set

• Front
• Back
 what do the angles of a straight line equal? 180 degrees what does an exterior angle of a triangle equal? the sum of the interior opposite angles When a pair of parallel lines are cut by a transversal the: corresponding angles are? alternate angles are? co-interior angles? equal equal supplementary What is the formula for angle sum of a polygon? (2n-40)right angles. n is the number of sides. eg: (2x8-4)x90=1080 (angle sum octogon) What is the sum of exterior angles of any polygon? 360 degrees What are the properties of a Parallelogram? -opposite sides are equal -opposite angles are equal -the diagonals bisect each other What are the properties of a Rhombus? -opposite sides are equal -opposite angles are equal -the diagonals bisect each other at right angles -the diagonals bisect the angle through which they pass What are the properties of a rectangle? - opposite sides are equal -opposite angles are equal -the diagonals bisect each other -diagonals are equal what are the properties of a square? the same as a parallelogram,rhombus and rectangle what is Pythagoras' Theorem? a squared +b squared = c squared