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In geometry, an isosceles triangle (/ aɪ ˈ s ɒ s ə l iː z /) is a triangle that has two sides of equal length or two angles of equal measure. 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.
An equilateral triangle is a triangle that has three equal sides. It is a special case of an isosceles triangle in the modern definition, stating that an isosceles triangle is defined at least as having two equal sides. [1] Based on the modern definition, this leads to an equilateral triangle in which one of the three sides may be considered ...
Triangles have many types based on the length of the sides and the angles. A triangle whose sides are all the same length is an equilateral triangle, [3] a triangle with two sides having the same length is an isosceles triangle, [4] [a] and a triangle with three different-length sides is a scalene triangle. [7]
The pons asinorum in Oliver Byrne's edition of the Elements [1]. In geometry, the theorem that the angles opposite the equal sides of an isosceles triangle are themselves equal is known as the pons asinorum (/ ˈ p ɒ n z ˌ æ s ɪ ˈ n ɔːr ə m / PONZ ass-ih-NOR-əm), Latin for "bridge of asses", or more descriptively as the isosceles triangle theorem.
The Schläfli symbol is a recursive description, [1]: 129 starting with {} for a for-sided regular polygon that is convex.For example, {3} is an equilateral triangle, {4} is a square, {5} a convex regular pentagon, etc.
Walkers discovered her half-naked body in a stream near Pen-y-ghent in 2004 and she remained unidentified for 15 years until her family saw a BBC News report and came forward.
If you’ve decided you don’t want to have children (or any more than you already have), congratulations — it’s a hard decision for many men. Now that you know what you want (or don’t ...
3. Diet. You are what you eat — and what you eat (or don’t eat) can affect your hair health. Certain diets, particularly those that lead to deficiencies in minerals and vitamins such as ...