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Understand angles, special shapes, and area formulas of quadrilaterals like trapezium, rectangle, square, parallelogram, and rhombus through practical examples. Calculate areas, missing sides, and distances with ease.
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Chapter 23 Quadrilaterals
Angles • All angles in a quadrilateral add to 360o • Special Shapes Isosceles trapezium Kite
Area Formula • Rectangle • Square • Trapezium • Parallelogram • Rhombus
Examples • A carpet measuring 3m by 4m is placed on a floor measuring 3.5m by 4.5m. What area of the floor is not covered by carpet? • A trapezium has an area of 60 cm2. The two parallel sides are 7 cm and 8 cm. What is the perpendicular distance between them?
Harder Examples • What is the area of • What is the missing side in