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10 Cards in this Set

  • Front
  • Back
supplementary angles
two angles whose measures have a sum of 180 degrees
complementary angles
two angles whose measures have a sum of 90 degrees
vertical angles
a pair of opposite angles formed when two lines meet at a point
perpendicular lines
two lines that intersect to form a right angle - the symbol is: ⊥
regular polygon
a polygon with all sides equal in length and all angles equal in measure
a polygon with four sides
a quadrilateral with exactly one pair of parallel sides
a quadrilateral with both pairs of opposite sides parallel
a parallelogram with four congruent sides
line symmetry
when a figure can be divided into two parts that are mirror images of each other