What is the difference between equilateral and isosceles

In an obtuse triangle, one angle is greater than a right angle? An obtuse triangle may be isosceles or scalene. In an acute triangle, all angles are less than right angles?

An acute triangle may be equilateral, isosceles, or scalene. Updated February 11, Infoplease Staff. Numbers and Formulas. See also:. Geometry: A Formal Introduction. Trending Here are the facts and trivia that people are buzzing about.

Related questions How do you classify the triangle given 2 cm, 2 cm, 2 cm? The angles of a triangle have the ratio What is the measure of the smallest angle? Is an equilateral triangle is sometimes, never or always an isosceles triangle?

What is an isosceles triangle? How do I prove that these are the vertices of an isosceles triangle: -3,0 , 0,4 , 3,0? In an isosceles triangle, two sides are the same length. An isosceles triangle may be right, obtuse, or acute see below. In an equilateral triangle , all the sides and angles are of equal length.

In an isosceles triangle , 2 of the sides are equal and 2 angles are equal. In geometry, an isosceles triangle is a triangle that has two sides of equal length. Sometimes it is specified as having exactly two sides of equal length, and sometimes as having at least two sides of equal length, the latter version thus including the equilateral triangle as a special case.