SUMMARY OF 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.
A quadrilateral is a plane figure bounded by four straight sides and whose four angles add up to 3600. The line joining two opposite corners of quadrilateral is known as diagonal. Examples are squares, rectangle, parallelogram, rhombus, trapezium, kite etc.
The definition, properties and how to construct all the quadrilateral listed above have been full discussed in this chapter.
This chapter also treated the construction of areas of regular plane figures
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