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False. Equilateral triangles are equilateral. All isosceles triangles have two of the sides the same, with the hypotenuse being longer than the other two.
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JudyFalse. True
An isosceles triangle has at least 2 equal sides. An equilateral triangle has 3 equal sides. Therefore all equilateral triangles are isosceles, but not all isosceles triangles are equilateral.
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True or false all isosceles triangles are also equilateral triangles?
False.
Is it true that some isosceles triangles are equilateral?
It's True. http://gyazo.com/232f047b2e921b8ebbc4c58507e20960
Do isosceles triangles must include a 90 angle true or false?
False.
Ture or false is An equilateral triangle a special case of an isosceles triangle?
true
Is a triangle a small regular polygon?
A regular polygon is any polygon that has sides which are the same length and angles whose measures are equal. An equilateral triangle (also equiangular triangle) is a regular polygon. Other isosceles triangles (equilateral triangles are isosceles, but they are an exception) and scalene triangles are not regular polygons. A side note: Only in a triangle is a polygon regular solely if it is equilateral. (Since an equilateral triangle is equiangular as well). This is NOT always true in other polygons, like quadrilaterals, where it can be equilateral but not necessarily equiangular (a rhombus) or equiangular but not equilateral (a rectangle).
