Isosceles triangles have at least 2 equal angles. The 3rd angle can either be equal to the other two (it's then called an equilateral triangle), or it can be different from the two equal angles, in which case it's an isosceles triangle. All equilateral triangles are isosceles triangles, but not all isosceles triangles are equilateral triangles.
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isoceles triangle
Isoceles
yes. that is part of the definition of an isoceles triangle
The angles of all triangles have a sum of 180 degrees.An isoceles triangle has at least 2 equal sides (if all three are equal, it is an equilateral triangle).
an isoceles triangle has two equal sides and therefore has two angles that are congruent.