isosceles trapezoid
A square, but not a rhombus because a rhombus does not have four congruent angles
Equilateral (regular)
Rectangles;all angles equal 90 degrees
A rhombus is a parallelogram with four equal sides. A square is a type of rhombus.
A scalene triangle
trapezoid
trapezoid
Equal angles.
A square, but not a rhombus because a rhombus does not have four congruent angles
a trapezoid
All rhombuses have two pairs of congruent angles (opposite angles are congruent to one another - a square is a special case type of rhombus in which all four angles are congruent).
RectangleA rectangle has 4 congruent angles, but two pairs of congruent sides instead of all sides being congruent.
There are obtuse, acute, and right angles. It depends on what type.
Adjacent angles
An equilateral triangle.
A scalene triangle
Equilateral triangle