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Isosceles Triangle -- from Wolfram MathWorld
An isosceles triangle is a triangle with (at least) two equal sides. In the figure above, the two equal sides have length b and the remaining side has length a. 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. The name derives from the Greek iso (same) and skelos (leg).

Isosceles triangle - Wikipedia
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.Examples of isosceles triangles include the isosceles right triangle, the golden triangle, and the ...

Isosceles triangle - math word definition - Math Open ...
The word isosceles is pronounced "eye-sos-ell-ease" with the emphasis on the 'sos'.It is any triangle that has two sides the same length. If all three sides are the same length it is called an equilateral triangle.Obviously all equilateral triangles also have all the properties of an isosceles triangle.

Isosceles | Definition of Isosceles by Merriam-Webster
Isosceles definition is - having two equal sides. Recent Examples on the Web. Geographically, Richland, Hammonton, and Absecon don't form an isosceles triangle. — Phil Anastasia, Philly.com, "St. Augustine's new head coach will continue non-public rivalry," 26 May 2017 These example sentences are selected automatically from various online news sources to reflect current usage of the word ...

Triangle - Wikipedia
By lengths of sides. Triangles can be classified according to the lengths of their sides: An equilateral triangle has all sides the same length. An equilateral triangle is also a regular polygon with all angles measuring 60°.; An isosceles triangle has two sides of equal length. An isosceles triangle also has two angles of the same measure, namely the angles opposite to the two sides of the ...

Triangles - Equilateral, Isosceles and Scalene
Equilateral, Isosceles and Scalene. There are three special names given to triangles that tell how many sides (or angles) are equal. There can be 3, 2 or no equal sides/angles:

4 Ways to Construct an Isosceles Triangle - wikiHow
How to Construct an Isosceles Triangle. An isosceles triangle is a triangle with two equal side lengths and two equal angles. Sometimes you will need to draw an isosceles triangle given limited information. If you know the side lengths,...

Isosceles Triangle | Definition of Isosceles Triangle by ...
Isosceles triangle definition is - a triangle in which two sides have the same length.

Isosceles Triangles - Free Math Help
Isosceles Triangles Have Two Equal Sides. There are many types of triangles in the world of geometry. There is a special triangle called an isosceles triangle. In an isosceles triangle, the base angles have the same degree measure and are, as a result, equal (congruent). Similarly, if two angles of a triangle have equal measure, then the sides opposite those angles are the same length.

2 Simple Ways to Find the Area of an Isosceles Triangle ...
An isosceles triangle is a triangle with two sides of the same length. These two equal sides always join at the same angle to the base (the third side), and meet directly above the midpoint of the base. You can test this yourself with a ruler and two pencils of equal length: if you try to tilt the triangle to one direction or the other, you cannot get the tips of the pencils to meet.