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Quadrilaterals - Coggle Diagram
Quadrilaterals
Classification of polygons
no of vertices 4 = quadrilaterals
no of vertices 5 = pentagon
no of vertices 6 = hexagon
no of vertices 3 = triangle
no of vertices 7 = heptagon
no of vertices 8 = octagon
no of vertices 9 = nonagon
no of vertices 10 = decagon
no of vertices n = ngon
Kinds of Quadrilaterals
trapezium
one pair of opposite sides are parallel
Isosceles trapezium
rectangle
all angles are congruent
diagonals bisect each other
opposites sides are parallel and congruent
Kite
two pairs of adjacent sides are of equal length.
parallelogram
opposite sides are parallel and congruent
opposite angles are congruent
square
All sides are equal
All angles are congruent
diagonals bisect each other at right angles
angle sum property
sum of measures of 4 interior angles of quadrilaterals is 360 degree.
sum of measure of the external angles of polygon is 360 degree
problems related to quadrilaterals