Chapter Overview
This chapter focuses on quadrilaterals—four-sided polygons—and their properties. It introduces various types of quadrilaterals such as parallelograms, rectangles, squares, rhombuses, and trapeziums. Students learn about angle sums, diagonal properties, and conditions for congruency and symmetry. The chapter also includes key theorems used in solving geometrical problems involving quadrilaterals.
Important Keywords
- Quadrilateral: A polygon with four sides and four angles.
- Parallelogram: A quadrilateral with opposite sides parallel and equal.
- Rectangle: A parallelogram with four right angles.
- Square: A rectangle with all sides equal.
- Rhombus: A parallelogram with all sides equal but not necessarily with right angles.
- Trapezium: A quadrilateral with at least one pair of parallel sides.
Detailed Notes
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