The point where both rays (sides) of an angle meet.
A triangle in which all sides are the same length and all angles are the same size.
A triangle that has a right angle. (90 degree angle)
A triangle in which one angle is larger than 90 degrees.
A triangle in which all three angles are less than 90 degrees.
A triangle in which two sides are the same length and the two base angles have the same measure.
A triangle in which no two sides are of the same length.
The longest side of a right triangle, opposite the right angle.
leg (right triangle)
The two sides of a right triangle that form the right angle.
The third side of an isosceles triangle, it may not be congruent to the other two sides.
leg (isosceles triangle)
The two sides of an isosceles triangle that are congruent.
A triangle in which the three angles are congruent.
Sides of a triangle that share a vertex.
The side across from an angle.
A polygon with three sides.
The angle opposite the base of an isosceles triangle.
The sum of the interior angles of a triangle.
The angles opposite the congruent sides of an isosceles triangle.
Two triangles that are have the same shape and size.