Isosceles Triangle
An isosceles triangle is a triangle having (at least) two sides of equal length, and therefore also with (at least) two equal angles.
Isosceles triangle is an elementary-school-level concept.
It is listed in the California State Standards for Grade 3.
Examples
| Equilateral Triangle: |
A triangle in which all three sides are of equal length. In such a triangle, the angles are all equal as well. |
Prerequisites
| Angle: |
An angle is a measure of the amount of rotation about the point of intersection of two lines or line segments that is required to bring one into correspondence with the other. |
| Triangle: |
A triangle is a three-sided (and three-angled) polygon. |
Classroom Articles on Polygons
Classroom Articles on Geometry (Up to Elementary-School Level)
