Classifying Triangles

Front

What are the vertices of a triangle?

Back

The vertices of a triangle are the points where the sides meet. For example, in triangle ABC, the vertices are A, B, and C.

Front

What type of triangle has all sides of equal length?

Back

An equilateral triangle has all sides of equal length and all angles measuring 60 degrees.

Tags

CCSS.4.G.A.2

Front

What type of triangle has one angle greater than 90 degrees?

Back

An obtuse triangle has one angle that is greater than 90 degrees.

Tags

CCSS.4.G.A.2

Front

What type of triangle has exactly two sides of equal length?

Back

An isosceles triangle has exactly two sides that are congruent (equal in length).

Tags

CCSS.4.G.A.2

Front

What is the sum of the interior angles of a triangle?

Back

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

Tags

CCSS.8.G.A.5

Front

What is a right triangle?

Back

A right triangle is a triangle that has one angle measuring exactly 90 degrees.

Tags

CCSS.4.G.A.2

Front

What is the name of triangle ABC?

Back

Triangle ABC is named based on its vertices A, B, and C.

Tags

CCSS.HSG.CO.A.1

Front

How can you identify an isosceles triangle?

Back

An isosceles triangle can be identified by having two sides that are of equal length and two angles that are equal.

Tags

CCSS.2.G.A.1

Front

What is an equiangular triangle?

Back

An equiangular triangle is a triangle where all three angles are equal, each measuring 60 degrees.

Tags

CCSS.4.G.A.2

Front

What is the difference between scalene and isosceles triangles?

Back

A scalene triangle has all sides of different lengths, while an isosceles triangle has at least two sides that are equal.

Tags

CCSS.4.G.A.2