angles
less than 90 degrees
acute
two congruent sides and 3 acute angles
acute isosceles
number of sides on a quadrilateral
4
4 attributes of a polygon are:
closed, straight sides, 3 or more sides, and ______.
no intersecting lines
two angles with a sum of 90 degrees
complementary angle pair
exactly 90 degrees
right
three congruent angles
equiangular and equilateral
number of pair of parallel sides on a parallelogram
2
a polygon with 6 sides
hexagon
same intersection, across from one another
vertical angle pair
exactly 180 degrees
straight
one angle that measures 95 degrees and no congruent sides
scalene obtuse
number of right angles in a rhombus
a polygon with 5 sides
pentagon
supplementary and adjacent
linear pair
90 degrees < X < 180 degrees
obtuse
2 acute angles with one obtuse angle, and 2 sides equal with the other longer.
isosceles obtuse
A square is quite special. It can be classified in many ways. Name them.
polygon, quadrilateral, parallelogram, rectangle, and rhombus
a polygon with 12 sides
dodecagon
same position, different intersection
corresponding angle pair
180 degrees < x < 360 degrees
convex
What is the measure of each angle in an equilateral triangle?
60 degrees
define a trapezoid ...
A trapezoid is a _____, and a ______, with _____ sides, and ____________________.
polygon, quadrilateral, 4, exactly one pair of parallel sides
a polygon with an unknown number of sides
n-gon
adjacent, same intersection
linear pair