Презентация к уроку геометрии по теме" Четырехугольники" на английском языке

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  QUADRILATERALS
  Mikhailichenko Yelena , Tsoy Svetlana
  

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  Polygon
  A POLYGONE is a many-sided shape. Sides and angles are the same. Quadrilateral has 4 sides and 4 angles.
  

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  Types of quadrilaterals
  Parallelogram has two pairs of parallel sides. Its parallel sides are equal. Its opposite angles are equal too.
  Rhombus is a parallelogram too. Its sides are all equal.
  Square has all equal sides and all equal angles too.
  Rectangle is a parallelogram which has all equal angles.
  Trapezoid has only two parallel sides.
  
  Parallelogram
  Square
  Rectangle
  Rhombus
  Trapezoid
  

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  You must know
  The diagonals of a parallelogram are divided in half by the point of intersection.
  

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  The diagonals of a rectangle and a square are equal
  

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  Diagonals of a rhombus are perpendicular and are the bisectors of its angles.
  

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  A trapezoid has only one pair of parallel sides. There are only two types of trapezoid .
  Trapezoid
  Isosceles trapezoid
  Rectangle trapezoid
  

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  Thanks for your attention!