Classification of Quadrilateral (2)

Lesson#20
Classification of Quadrilateral (2)
TRAPEZIUM: A quadrilateral having at-least one pair of parallel sides. It is called Trapezoid in US.
PROPERTIES: 1. Adjacent angles are supplementary.
SPECIAL CASES: >> A trapezium having equal diagonals is called an isosceles trapezium.
A trapezium having two pairs of parallel sides is called parallelogram.
A trapezium having one right angle is called a right trapezium.
Introduction to Analytical Geometry
chapter No 4
Exercise No 4.1
mathematics
part 2