Polygons have straight sides which all meet at an angle. Polygons do not have curved sides. Choose ALL the polygons:, What does the Greek word 'poly' mean?, many, one, few, What does the Greek word 'gonia' mean?, angle, line, circle, A quadrilateral is a special type of polygon. Quadrilaterals have four straight sides which all meet at four angles. What do you think the word 'quad' means?, 'Quad' means 'four', 'Quad' means 'many', 'Quad' means 'two', Quadrilaterals are polygons with four sides. The Latin word 'quad' means 'four', and the word 'lateral' means 'sides'. Choose the quadrilaterals:, Straight lines that never cross and stay the same distance apart are called parallel lines. Which picture has parallel lines?, Choose the lines which are parallel:, A parallelogram is a type of quadrilateral. It has four sides, and two pairs of parallel lines. Choose the group of parallelograms:, Apart from having two pairs of parallel sides, parallelograms also have opposite sides equal in length, and their opposite angles are equal. Find the 3 parallelograms:, What is a polygon?, a 2D closed shape, with no gaps, and with straight sides, a 3D shape with straight edges, a four-sided shape, The word 'quad' means ..., four, straight, many, What is a quadrilateral?, a polygon with 4 sides and 4 angles, a hexagon with 4 sides and 3 angles, a polygon with one pair of parallel sides, Is a square a polygon AND a quadrilateral?, Yes, it is a closed 2D shape with 4 straight sides and 4 angles, No, it has straight sides and 3 right angles, A square is a polygon AND a quadrilateral. Is it also a parallelogram?, Yes, because it has 2 pairs of parallel sides., No, because it does not have parallel sides., Which is the parallelogram?, Is a trapezium a parallelogram?, No, because it has only one pair of parallel sides, Yes, because it has four sides, Apart from having two pairs of parallel sides, parallelograms also have opposite sides equal in length, and their opposite angles are equal. Find the 3 parallelograms:, This shape is a kite. Is it a polygon?, Yes, No, Is it a quadrilateral?, Yes, No, Is it a parallelogram?, Yes, No, To be called a parallelogram, a shape MUST HAVE:, 4 straight sides, 4 angles, 2 pairs of parallel sides, 4 straight sides, 4 angles, one pair of parallel sides, 4 straight sides, with some gaps, A rhombus is a special type of parallelogram, because its sides are all ...., equal in length, different lengths, curved instead of straight, Choose the rhombus:

Quadrilaterals & Parallelograms

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