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.
The shape you are referring to is a triangle with two equal angles, known as an isosceles triangle. In an isosceles triangle, two of the three angles are congruent, meaning they have the same measure. The third angle may or may not be equal to the other two angles, depending on the specific triangle. This geometric property is a fundamental concept in geometry and is often used in various mathematical applications.
A square if it has 4 equal angles too, or a rhombus if it has two obtuse and two acute angles.