Lesson#21
Classification of Quadrilateral (3)
Isosceles Trapezium: A quadrilateral having equal diagonals is called an isosceles trapezium.
PROPERTIES: 1. Adjacent angles are supplementary.
SPECIAL CASES: An equiangular isosceles trapezium is called a rectangle.
Introduction to Analytical Geometry
chapter No 4
Exercise No 4.1
mathematics
part 2
