They are triangles whose three sides are equal in length and whose three interior angles are equal in measure.
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All isosceles triangles are not equilateral triangles
No...
In an octagon, there are 20 equilateral triangles. Each side of the octagon can form two equilateral triangles with the adjacent sides, resulting in 8 equilateral triangles. Additionally, the diagonals of the octagon can form 12 more equilateral triangles. Therefore, the total number of equilateral triangles in an octagon is 8 + 12 = 20.
Triangles may be right triangles equilateral triangles acute or obtuse triangles
5 equilateral triangles.