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20 Cards in this Set

  • Front
  • Back
equilateral
a regular triangle
obtuse
angles that measure between 90 and 180 degrees
angle bisector
a ray that divides an angle into two angles of equal measure
supplementary angles
two angles that add up to 180
vertical angles
nonadjacent angles of two intersecting lines
parallelogram
a quadrilateral with opposite sides parallel and equal
square
a rectangle that is a rhombus
right triangle
a triangle with perpendicular legs
square
a regular quadrilateral
isosceles
a triangle with two equal legs
adjacent angles
two angles that share a common ray and endpoint
congruent angles
two angles that have the same measure
linear pair
two adjacent angles for which the noncommon rays form a straight line (adjacent and supplementary)
trapezoid
a quadrilateral with one set of parallel sides
scalene
a triangle with no sides congruent
acute angles
angles that measure between 0 and 90 degrees
hypotenuse
side opposite the right angles in a triangle
congruent angles
angles with equal measures
angle bisector
the ray common to two adjacent congruent angles
perpendicular
lines that intersect to form right angles