INTRODUCTION
A plane figure is a geometric figure that has no thickness. It lies entirely in one plane and it’s composed of line segments, curves, or a combination of the two. They are often categorized as open or closed. The closed figures can be further categorized into polygonal plane figures and non-polygonal plane figures.
PLANE FIGURES
Plane figures are flat two-dimensional (2D) shapes. A plane figure is a geometrical form such that the straight line that joins any two points on it wholly lies on the surface. Examples of plane shapes are quadrilaterals, triangles, circles and other polygons.
Quadrilaterals
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