An isosceles triangle is a triangle (3-sided, 2-dimensional shape), 2 sides of which are equal in length. Any triangle which is not equalateral
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Using trigonometry the area of the isosceles triangle 60 square cm and its perimeter is 48 cm both rounded to the nearest integer
a+b+c
Right Triangle
None; because there is no justification for assuming that the two triangles (or trangles, as you prefer to call them) are similar.
A triangle that has all equal sides and angles.