Isosceles
Assuming that sids is your way of spelling side and sides, it would appear that you are describing an obtuse angled isosceles triangle.
The name for a triangle with two sides of equal length is an isosceles triangle.
An equilateral triangle
an isosceles triangle
a scalene triangle has no equal sides. an isosceles triangle has two equal sides
An Isosceles Triangle
Isoseles triangle has two equal sides.
equilateral triangle
A triangle with 2 equal side lengths is called an isosceles triangle.
iscosoles triangle
it is a equalatiral triangle