Depending on the definition that is used, a trapezium is either a figure with four sides that has no parallel sides (American) or a figure with fours sides that has two parallel sides (British). Either way, a trapezium can not have 3 right angles.
A triangle.
A square, rectangle, or quadrilateral
A triangle.
A rhombus has four congruent sides. The angles don't matter, but if they're right angles, then the rhombus is a square.
Depending on the definition that is used, a trapezium is either a figure with four sides that has no parallel sides (American) or a figure with fours sides that has two parallel sides (British). Either way, a trapezium can not have 3 right angles.
A triangle.
A square, rectangle, or quadrilateral
The 3 names for this figure are: 1. Square - all sides are parallel, there are 4 right angles, and all the sides are the same length. All squares are quadrilaterals and parallelograms. 2. Quadrilateral - 4 sides. NOT all quadrilaterals are squares, however. 3. Parallelogram - all sides are parallel. NOT all parallelograms are squares, however.
Yes and no. By definition, a quadrilateral is a closed figure with 4 sides. So any square or rectangle will answer your question. However a polygon with 4 sides which are unequal in length will not have 3 right angles.
A triangle.
-- it's a closed, plane figure -- it has 3 sides, 3 vertices, 3 interior angles (any one of these 3 statements implies the other 2) -- the sum of its interior angles is 180 degrees
A triangle has 3 sides and 3 interior angles that add up to 180 degrees.
A square, rectangle, or quadrilateral A square, rectangle, or quadrilateral
A rhombus has four congruent sides. The angles don't matter, but if they're right angles, then the rhombus is a square.
no
A figure with four right angles is called a rectangle. A specific type of rectangle in which all the sides are of equal length is called a square.