Scalene triangle - Definition and examples

A scalene triangle is a triangle with all three sides of different lengths.

Here are four ways to check if a triangle is scalene.

1. Close observation

Scalene triangles

After taking a  close look at the two triangles above, it is not hard to see that all three sides have different lengths.

2. The lengths of the sides are given.

A scalene triangle

Using tick marks.

Sides that have the same lengths will have the same number of tick marks. The triangle below is scalene since a different number of tick marks is used for each side.

A scalene triangle with tick marks

4. The angles of the triangle are given.

If the angles of the triangle are all different, then the triangle is scalene.

For example, a triangle is scalene if the angles of the triangle are 400,  600, and 800     

Recent math words

  1. Repeating Decimal - Definition and Examples

    Sep 12, 19 04:51 PM

    What is a repeating decimal ? A repeating decimal is a decimal in which ...

    Read More

  2. Reflex Angle - Definition and Examples

    Sep 12, 19 01:00 PM

    What is a reflex angle in geometry ? Definition and examples.

    Read More