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What is the meaning of isosceles?

Author

William Jenkins

Published Mar 04, 2026

What is the meaning of isosceles?

1 of a triangle : having two equal sides — see triangle illustration. 2 of a trapezoid : having the two nonparallel sides equal.

Similarly, it is asked, what is the meaning of isosceles triangle?

A triangle with two sides of equal length is an isosceles triangle. The two equal sides of an isosceles triangle are known as 'legs' whereas the third or unequal side is known as the 'base'.

Secondly, where does the word Isosceles come from? σοσκελής (isoskel?s, “equal-legged”), from ?σος (ísos, “equal”) +‎ σκέλος (skélos, “leg”) +‎ -ής (-?s, adjective suffix).

Likewise, what is an isosceles shape?

An isosceles triangle is a triangle with (at least) two equal sides. In the figure above, the two equal sides have length and the remaining side has length. . This property is equivalent to two angles of the triangle being equal. An isosceles triangle therefore has both two equal sides and two equal angles.

What is the meaning of scalene?

of a triangle. : having the three sides of unequal length — see triangle illustration.

What are the characteristics of an isosceles triangle?

An isosceles triangle definition states it as a polygon that consists of two equal sides, two equal angles, three edges, three vertices and the sum of internal angles of a triangle equal to 1800.

Which is the best definition of an isosceles triangle answers com?

A triangle that has at least two congruent sides.

Do all isosceles triangles have right angles?

Answer and Explanation:

No, an isosceles triangle does not always have a right angle. The only properties that a triangle must satisfy to be an isosceles triangle is that it

What degrees is a isosceles triangle?

Parts of an Isosceles Triangle

The two equal sides of the isosceles triangle are legs and the third side is the base. The angle between the equal sides is called the vertex angle. All of the angles should equal 180 degrees when added together.

What does isosceles look like?

An isosceles triangle has two equal sides (or three, technically) and two equal angles (or three, technically). The equal sides are called legs, and the third side is the base. The two angles touching the base (which are congruent, or equal) are called base angles. The above figure shows two isosceles triangles.

How do you find the side of an isosceles triangle?

To find the unknown leg length with a given base length and altitude, use the following formula: sqrt(A^2 - (B / 2)^2), where A is the altitude and B is the length of the base. For example, given an isosceles triangle with base length 6 and altitude 7, the leg lengths are: sqrt(7^2 + (6 / 2)^2) = sqrt(58) = 7.6.

How do I find the height of an isosceles triangle?

Area of Isosceles Triangle Using Only Sides = ½[√(a2 − b2 /4) × b]
  1. b = base of the isosceles triangle.
  2. h = height of the isosceles triangle.
  3. a = length of the two equal sides.

Which is the best definition of an isosceles triangle?

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.

Are all equilateral triangles isosceles?

Since all equilateral triangles have three congruent sides, they fit the definition of an isosceles triangle.

Are all isosceles triangles similar?

No, all isosceles triangles are not similar. An isosceles triangle is a triangle with two sides of equal length.

What would be the rule for perimeter of an isosceles triangle?

To calculate the perimeter of an isosceles triangle, the expression 2s + b is used, where s represents the length of the two congruent sides and b represents the length of the base.

What does isosceles trapezoid mean?

An isosceles trapezoid (called an isosceles trapezium by the British; Bronshtein and Semendyayev 1997, p. 174) is trapezoid in which the base angles are equal and therefore the left and right side lengths are also equal.

What is another word for scalene?

trigon, trilateral, triangle.

What is scalene and right?

In an equilateral triangle, all three sides are the same length. In an isosceles triangle, two sides are the same length. An isosceles triangle may be right, obtuse, or acute (see below). In a scalene triangle, none of the sides are the same length. A scalene triangle may be right, obtuse, or acute (see below).

What does scalene and isosceles mean?

Scalene Triangle

Isosceles: means "equal legs", and we have two legs, right? Also iSOSceles has two equal "Sides" joined by an "Odd" side. Scalene: means "uneven" or "odd", so no equal sides.

What is a scalene triangle look like?

A scalene triangle has three sides of different lengths. No congruent sides. Note: The angles in a scalene triangle are also of different measures. An isosceles triangle has two congruent sides.