The converse of isosceles triangle theorem is also true which states that in a triangle if two angles are equal then the sides opposite to those angles are also equal. The isosceles triangle theorem states that when two sides are equal, the base angles are also equal. Following this fact, if two sides of a triangle are equal, then the angles opposite to those sides are also equal. The perpendicular bisector drawn from any angle bisects that angle and the side opposite to it.Ĭheck out a few more interesting articles related to the isosceles triangle in math.įAQs on Isosceles Triangle What is an Isosceles Triangle?Ī triangle in which at least two sides are equal is called an isosceles triangle. The perpendicular bisector drawn from the apex angle bisects that angle and the unequal side of the triangle. CriteriaĪll three sides are of different measurements.Īt least two angles are equal in measure.Īll three angles are equal and measure 60 degrees each. Look at the table below to understand the differences and similarities in scalene, equilateral, and isosceles triangles. A scalene triangle is the one in which all three sides and all three angles are of different measurements, an equilateral triangle is the one with all three sides and angles equal, and in an isosceles triangle, two sides and two angles are equal in measurement. Each triangle is different from the other on the basis of its unique properties. The three common types of triangles are scalene, equilateral, and isosceles triangles. Scalene Equilateral and Isosceles Triangle
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