EXERCISE 19 A
1.What would you call a figure having four sides out of which two opposite sides are parallel ?
2.What would you call a figure having four sides, the opposite sides parallel and the angles at the corner right angles ?
3.What would you call a figure having four equal sides, the opposite sides parallel and the angles at the corners right angles ?
4.What shape is a one-rupee currency note ?
5.Write true or false
(i) Every quadrilateral is a parallelogram
(ii) Every parallelogram is a rhombus
(iii) Every square is a rhombus
(iv) Every square is a rectangle
(v) No parallelogram is a square
(vi) Every square is a parallelogram
6.ABCD is a parallelogram.What special name wil you give it , if the following additional facts are known ?
(ii) angleBAD is a right angle
(iii) AB=AD and angleBAD = right angle
7.DE are points on sides AB , AC of delta such that DE||BC. What is a quadrilateral BCED called ?
8.How does a trapezium differ from a parallelogram ?