Isoceles Triangle
A polygon; specifically a tetragon. A two-dimensional shape with four equal sides and four right angles is a square. A two-dimensional shape with two sets of equal sides and four right angles is a rectangle. A two-dimensional shape with two sets of equal sides and two sets of equal angles is a parallelogram. A parallelogram where each opposite angel bisects the shape is a rhombus. A two-dimensional shape with one set of equal, parallel sides and two sets of equal angles is a trapezoid. A three-dimensional shape with four triangular faces is a tetrahedron.
A rhombus is a shape having two acute angles and four equal sides.
A Triangle
it's a triangle (three sides) with two sides having equal lengths and angles
There is no three-sided shape with two obtuse angles, because the three interior angles of a three-sided shape, which is a triangle, add up to 180 degrees, and two obtuse angles would be over 180 degrees.
A rhombus is your answer
A rectangle
56678 Shape is called a rhombus
A rectangle has two sets of two equal sides and four right angles.
A square if it has 4 equal angles too, or a rhombus if it has two obtuse and two acute angles.
An isosceles triangle