Classifying Triangles

Front

What is an equiangular triangle?

Back

An equiangular triangle is a triangle in which all three angles are congruent (equal in measure).

Tags

CCSS.4.G.A.2

Front

What is a scalene triangle?

Back

A scalene triangle is a triangle in which all three sides are of different lengths, meaning it has no congruent sides.

Tags

CCSS.4.G.A.2

Front

What is an obtuse triangle?

Back

An obtuse triangle is a triangle that has one angle measuring more than 90 degrees.

Tags

CCSS.4.G.A.2

Front

What is an acute triangle?

Back

An acute triangle is a triangle in which all three angles are less than 90 degrees.

Tags

CCSS.4.G.A.2

Front

What is an isosceles triangle?

Back

An isosceles triangle is a triangle that has at least two sides that are congruent (equal in length).

Tags

CCSS.4.G.A.2

Front

What is an equilateral triangle?

Back

An equilateral triangle is a triangle in which all three sides are congruent and all three angles are equal, each measuring 60 degrees.

Tags

CCSS.4.G.A.2

Front

How do you classify triangles based on sides?

Back

Triangles can be classified as scalene (no congruent sides), isosceles (two congruent sides), or equilateral (all sides congruent).

Tags

CCSS.4.G.A.2

Front

How do you classify triangles based on angles?

Back

Triangles can be classified as acute (all angles < 90°), right (one angle = 90°), or obtuse (one angle > 90°).

Tags

CCSS.4.G.A.2

Front

What is the sum of the angles in any triangle?

Back

The sum of the angles in any triangle is always 180 degrees.

Tags

CCSS.8.G.A.5

Front

What is the relationship between the sides and angles in a triangle?

Back

In a triangle, the largest angle is opposite the longest side, and the smallest angle is opposite the shortest side.

Tags

CCSS.HSG.CO.C.10