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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