|acute triangle|| |
A triangle with three angles that each measure between 0º and 90º.
|congruent||Having the same size and shape.|
|corresponding angles||Angles of separate figures that are in the same position within each figure.|
|corresponding sides||Sides of separate figures that are opposite corresponding angles.|
|equilateral triangle||A triangle with 3 equal sides.|
|isosceles triangle||A triangle with 2 equal sides.|
|obtuse triangle|| |
A triangle with one angle that measures between 90º and 180º.
|polygon||A closed plane figure with three or more straight sides.|
|right triangle||A triangle containing a right angle.|
|scalene triangle||A triangle in which all three sides are a different length.|
|similar||Having the same shape but not necessarily the same size.|
|triangle||A polygon with three sides.|