ppt on different type of quadritral
- 1. BY Class-IX
- 2. GROUP MEMBER
- 3. Properties OF Quadrilaterals:- •Four sides (edges) •Four vertices (corners) •The interior angles add up to 360 degrees:
- 4. Types of Quadrilaterals:- The Rectangle means "right angle" A rectangle is a four-sided shape where every angle is a right angle (90°). Also opposite sides are parallel and of equal length.
- 5. The Rhombus A rhombus is a four-sided shape where all sides have equal length. Also opposite sides are parallel and opposite angles are equal. Another interesting thing is that the diagonals (dashed lines in second figure) meet in the middle at a right angle. In other words they "bisect" (cut in half) each other at right angles. A rhombus is sometimes called a rhomb or a diamond.
- 6. The Square A square has equal sides and every angle is a right angle (90°) Also opposite sides are parallel. A square also fits the definition of a rectangle (all angles are 90°), and a rhombus (all sides are equal length).
- 7. The Parallelogram parallelogram has opposite sides parallel and equal in length. Also opposite angles are equal (angles "a" are the same, and angles "b" are the same). NOTE: Squares, Rectangles and Rhombuses are all Parallelograms!
- 8. The Trapezoid (UK: Trapezium) Trapezoid Isosceles Trapezoid A trapezoid (called a trapezium in the UK) has a pair of opposite sides parallel. It is called an Isosceles trapezoid if the sides that aren't parallel are equal in length and both angles coming from a parallel side are equal, as shown. And a trapezium (UK: trapezoid) is a quadrilateral with NO parallel sides:
- 9. Trapezoid Trapezoid Trapezium In the US: In the US: a pair of parallel sides NO parallel sides In the UK: In the UK: NO parallel sides a pair of parallel sides (the US and UK definitions are swapped over!) (the US and UK definitions are swapped over!)
- 10. The Kite Hey, it looks like a kite. It has two pairs of sides. Each pair is made up of adjacent sides (they meet) that are equal in length. The angles are equal where the pairs meet. Diagonals (dashed lines) meet at a right angle, and one of the diagonal bisects (cuts equally in half) the other.
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