Squares, rectangles, and some trapezoids.
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The sum of the interior angles of a polygon is 2n - 4 right angles, where n is the number of sides. For a 24 sided shape this gives (2 x 24) - 4 = 44 right angles = 3960°.
If a 4-sided figure is a square, then it has four right angles.If a 4-sided figure has four right angles, then it's a rectangle,and if it has two equal adjacent sides, then it's a square.
A parallelogram does not have to be four right angles. A parallelogram is a four sided shape with two parallel lines.
The sum of the interior angles of any n-sided plane figure is (2n-4) right angles. In your case n = 4 so sum is 4 right angles ie 360 degrees.
A figure with four equal sides and no right angles is a rhombus. A rhombus is comprised of two acute angles and two obtuse angles.