a line in a plane that never intersect
diagonals do not have any points outside the polygon
one or more diagonals have points outside the polgon
a line segment, other than a side, that joins two verticles of a polygon
a polygon with all sides and all angles congruent
a closed plane figure made of the line segments
alternate exterior angles
a pair of non-adjacent exterior angles on opposite sides of the transversal
segments that are equal in length
a point that divides a line segment onto two congruent segemts
an angle that measures 180
an angle with a measure greater than 90 and less than 180
an angle that measures less that 90
an angle that measures 90
lines that intersects to form right angles
any line ray or segment that intersects a segment at it's midpoint
a line that is perpendicular to a line segment and divides that segments onto 2 congruent parts
angles that have the same size and shape
the ray that divides a given angle onto 2 congruent angles
2 angles whose measures have a sum of 90
2 angles whose measures have the sum of 180
2 angles that are in the same plane
2 congruent angles formed by intersecting lines
a line that intersects 2 or more lines at different points
a pair of non-adjacentangles
alternite interior angles
a pair of non-adjacent interior angles on opposite sides of the transversal
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