How To Find The Perimeter Of An Isosceles Triangle
Let's look at the geometric characteristics of
a isosceles triangle. But first please review the definition of
Perimeter Of Two-Dimensional Shapes,
Angle and Right Angle.
- An isosceles triangle has two unique features.
- The first unique feature
is two sides have exactly the same length: sides A.
- The second unique feature
the angles at the base of the triangle are exactly the same. In other words ∠BA and ∠AB are equal. The sum of the interior
angles is 180°.
- Special note, all sides of an isosceles triangle must be greater than zero.
Perimeter Of An Isosceles Triangle Formula
Formula = Side A + Side A + Side B =
Formula = 2 A + B =
Formula = (2 × A) + B