Unit 4 - Triangle Properties Vocab

Front

Isosceles Triangle

Back

A triangle with at least two equal sides, and therefor two equal angles

Tags

CCSS.4.G.A.2

Front

Scalene Triangle

Back

A triangle with all sides of different lengths, and therefor angles of different measures.

Tags

CCSS.4.G.A.2

Front

Equilateral Triangle

Back

A triangle with all sides of equal length and therefore angles of equal measure.

Tags

CCSS.4.G.A.2

Front

Equiangular Triangle

Back

A triangle with all angles equal, each measuring 60 degrees. If all angles are equal, then all sides must be equal in the triangle.

Tags

CCSS.8.G.A.5

Front

Acute Triangle

Back

A triangle where ALL angles are less than 90 degrees.

Tags

CCSS.4.G.A.2

Front

Right Triangle

Back

A triangle with one 90-degree angle.

Tags

CCSS.HSG.CO.C.10

Front

Obtuse Triangle

Back

A triangle with one angle greater than 90 degrees.

Tags

CCSS.4.G.A.2

Front

Interior Angle Theorem

Back

The sum of the interior angles of a triangle is always 180 degrees.

Tags

CCSS.8.G.A.5

Front

Exterior Angle Theorem

Back

The measure of an exterior angle of a triangle is equal to the sum of the measures of the two non-adjacent interior angles.

Tags

CCSS.8.G.A.5

Front

Congruent Angles

Back

Figures or angles that have the same size and shape.

Tags

CCSS.4.G.A.1