Classifying Triangles

Front

What is a triangle?

Back

A triangle is a polygon with three edges and three vertices.

Front

What are the types of triangles based on angles?

Back

1. Acute Triangle: All angles are less than 90 degrees. 2. Right Triangle: One angle is exactly 90 degrees. 3. Obtuse Triangle: One angle is greater than 90 degrees.

Front

What are the types of triangles based on sides?

Back

1. Equilateral Triangle: All sides are equal. 2. Isosceles Triangle: Two sides are equal. 3. Scalene Triangle: All sides are different.

Front

Define an Equilateral Triangle.

Back

An equilateral triangle is a triangle in which all three sides are of equal length and all three angles are equal to 60 degrees.

Front

Define an Isosceles Triangle.

Back

An isosceles triangle is a triangle that has at least two sides of equal length and the angles opposite those sides are equal.

Front

Define a Scalene Triangle.

Back

A scalene triangle is a triangle in which all three sides are of different lengths and all three angles are different.

Front

What is an Acute Triangle?

Back

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

Front

What is a Right Triangle?

Back

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

Front

What is an Obtuse Triangle?

Back

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

Front

What does it mean for a triangle to be Equiangular?

Back

An equiangular triangle is a triangle where all three angles are equal, which also makes it equilateral.