-- both have three angles
-- both have three sides
-- the interior angles of each add up to 180 degrees
-- neither has any side longer than the sum of the other two sides
-- both have at least two equal angles
-- both have at least two equal sides
-- the area of each is half the product of its base and its height
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Are isosceles triangle sometimes an equilateral triangle
It can be scalene or isosceles but not equilateral.
An isosceles triangle has at least two congruent sides. An equilateral triangle has three congruent sides. So, an equilateral triangle is a special case of isosceles triangles. Since the equilateral triangle has three congruent sides, it satisfies the conditions of isosceles triangle. So, equilateral triangles are always isosceles triangles. Source: www.icoachmath.com
Not ... exactly. It would be closer to accurate to say that an equilateral triangle is a special case of the isosceles triangle.All equilateral triangles are (also) isosceles; but most isosceles triangles are not equilateral.
Isosceles has 2 equal sides, but an equilateral triangle, all of its sides are equal.