All angles in the triangle are less than 90 degrees.
A triangle where one angle measures over 90 degrees.
One angle in the triangle measures exactly 90 degrees.
A triangle with at least 2 congruent sides
All the sides of the triangle are equal in length
No equal sides
A quadrilateral with 4 sides that are equal and has all 90 degree angles
A quadrilateral, all 4 sides the same length
a quadrilateral with two parallel sides
A quadrilateral in which the opposite sides are parallel, all angles are 90 degrees
a quadrilateral whose opposite sides are both parallel and equal in length, has 2 pairs of parallel lines and all parallelograms are quadrilaterals.
having four straight sides