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A rectangle is a quadrilateral where opposite sides are equal, and where there are four equal angles, this is usually represented like this. As with a square. Since the angles are all equal, it ...
Learn about angles in triangles and quadrilaterals with this BBC Bitesize Maths article. For students between the ages of 11 and 14.
Some important points to revise from the chapter are: • Sum of the angles of a quadrilateral is 360°. • A diagonal of a parallelogram divides it into two congruent triangles.