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 sides?

Back

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

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

How many congruent sides does an isosceles triangle have?

Back

An isosceles triangle has 2 congruent sides.

Front

What is an equilateral triangle?

Back

An equilateral triangle is a triangle in which all three sides are equal and all three angles are equal (each measuring 60 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 acute triangle?

Back

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

Front

What is an obtuse triangle?

Back

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

Front

Identify the triangle: Two sides are equal, and one angle is 90 degrees.

Back

Right Isosceles Triangle.

Front

Identify the triangle: All sides are different, and one angle is 90 degrees.

Back

Right Scalene Triangle.