Answer:
1, The trapezium is a four-sided polygon and a two-dimensional figure which has exactly one pair of parallel sides opposite to each other. A trapezoid is also a four-sided polygon and with one pair of parallel sides opposite to each other.
2.In plane Euclidean geometry, a rhombus (plural rhombi or rhombuses) is a quadrilateral whose four sides all have the same length. Another name is equilateral quadrilateral, since equilateral means that all of its sides are equal in length.
3.A heptagon is a polygon that has seven sides. It is a closed figure having 7 vertices. A heptagon is also sometimes called Septagon. In Geometry, the shape that is bounded by at least three straight lines or at least three interior angles is called polygon.
4.In geometry, a pentagon (from the Greek pente and meaning five and angle) is any five-sided polygon or 5-gon. The sum of the internal angles in a simple pentagon is 540°. A pentagon may be simple or self-intersecting.In geometry, a pentagon is a five-sided polygon with five straight sides and five interior angles that sum up to 540° . A pentagon shape is a plane figure, or flat (two-dimensional) 5-sided geometric shape.
5.Hexagon: A regular polygon that has 6 equal sides and 6 equal angles.A hexagon is a polygon with 6 straight sides. It's commonly found in nature, because it's a particularly efficient shape. A regular hexagon has sides that are all congruent and angles that all measure 120 degrees. This means the angles of a regular hexagon add up to 720 degrees.
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