Unit 3- Types of Triangles

Vocabulary flashcards covering the Triangle Angle Sum Theorem and classification of triangles by sides and angles.

Triangle Angle Sum Theorem

A theorem stating that the interior angles of any triangle add to $180\text{ degrees}$.

Scalene triangle

A triangle with no congruent sides.

Isosceles triangle

A triangle with two congruent sides.

Equilateral triangle

A triangle with all congruent sides.

Equiangular triangle

A triangle with all congruent angles.

Right triangle

A triangle with one right angle.

Obtuse triangle

A triangle with one obtuse angle ($> 90^\text{o}$).

Acute triangle

A triangle in which all angles are acute ($< 90^\text{o}$).