point where two or more lines cross
triangle with 3 equal sides
angles in the same position at different points of a figure
tool used to draw or measure angles
set of points that is part of a line; has an endpoint and extends
common point to both sides of an angle
angle smaller than 90 degrees
pairs of opposite angles; have the same measure
triangle with a 90 degree angle
two angles whose sum of their measures is 180 degrees
angle measuring 180 degrees
two of the sides in a triangle are the same
triangle with 3 equal angles, measuring 60 degrees
angle within a polygon
a triangle with all 3 angles less than 90 degrees
triangle with one obtuse angle
larger than 90 degrees
angle that shares a vertex and a common side with another angle
two angles whose sum of their measures is 90 degrees
angle formed by extending one side of a polygon at a vertex
all the sides of a triangle have different lengths
having the same size and shape
figures that have the same shape but not the same size
polygons with 4 sides and 4 angles
a line that connects two vertices that are not next to each other
polygon with all equal sides and angles
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