18 terms

Acute Triangle

Triangle that has three acute angles

Base Angles of Isosceles Triangle

Angles on the base of an isosceles triangle

Base of Isosceles Triangle

The side that is congruent to neither of the other sides

Congruent Polygons

Polygons which all pairs of corresponding parts (sides and angles) are congruent

Equiangular Triangle

Triangle in which all angles are equal

Equilateral Triangle

Triangle in which all sides are equal

Exterior Angle of a Polygon

The angles that are adjacent to the interior angles of the polygon when the sides of the polygon are extended

Hypotenuse

The side across from the right angle in a right triangle

Included Angle

An angle on a polygon in between the two sides that formed it

Included Side

A side on a polygon which is in between two consecutive angles

Isosceles Triangle

A triangle that has at least two congruent sides

Legs of Isosceles Triangle

The pair of legs that are congruent

Obtuse Triangle

Triangle that has exactly one obtuse angle

Remote Interior Angles

The angles of a triangle that are not adjacent to a given exterior angle

Right Triangle

A triangle with exactly one right angle

Scalene Triangle

A triangle that has no congruent sides

Triangle

Polygon with three sides

Vertex Angle of Isosceles Triangle

Angle opposite the base in an isosceles triangle