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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 two and only 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.. By the isosceles triangle theorem, the two angles opposite the equal sides are themselves equal ...
Definition of Isosceles Triangle - Maths Resources
Math explained in easy language, plus puzzles, games, quizzes, videos and worksheets. For K-12 kids, teachers and parents.
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 Triangle . Three equal sides Three equal angles, always 60° . Isosceles Triangle . Two equal sides Two equal angles . Scalene Triangle . No equal sides No equal angles
Isosceles | Definition of Isosceles by Merriam-Webster
Late Latin isosceles having two equal sides, from Greek isoskelēs, from is-+ skelos leg; perhaps akin to Old English sceol wry
Types of Triangles - Avvanta
Types of Triangles Right triangle: Has one 90 degree angle Equilateral triangle: All angles are the same (60 degrees) Isosceles triangle: Has two angles the same and two sides the same Scalene triangle: Has all three angles and all three sides different Obtuse triangle: Has one obtuse angle, greater than 90 degrees The sum of all angles in a triangle is _____ degrees.
Is an equilateral triangle a isosceles triangle? - Answers.com
No. An equilateral triangle is where all three sides of the triangle are equal. An isosceles triangle is where only two of the sides are equal.
2 Simple Ways to Find the Area of an Isosceles Triangle ...
How 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...
Prove Triangle Is Isosceles using Coordinate Geometry
An isosceles triangle has 2 congruent sides and two congruent angles. The easiest way to prove that a triangle is isosceles using coordinate geometry is to use the sides.