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Quadrilaterals - Coggle Diagram
Quadrilaterals
Parellelogram
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Diagonals bisect each other and each diagonal divides the parallelogram into two congruent triangles.
If one of the angles of a parallelogram is a right angle then all other angles are right and it becomes a rectangle.
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Squares
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Also, a parallelogram becomes a square when the diagonals are equal and right bisectors of each other.
Rhombus
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Adjacent angles are supplementary (For eg., ∠A + ∠B = 180°).
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Trapezium
The bases of the trapezium are parallel to each other (MN ⫽ OP).
No sides, angles and diagonals are congruent.