Chapter 3 : Understanding Quadrilaterals

Exercise 3.1

1. Given here are some figures.
(1)

(2)

(3)

(4)
(5)

(6)

(7)

(8)
Classify each of them on the basis of the following.
(a) Simple curve (b) Simple closed curve (c) Polygon
(d) Convex polygon (e) Concave polygon
Answer:  (a)  Figure (1) , Figure (2) , Figure (3) , Figure (5) , Figure (6) and Figure (7) are simple curve .

(b) Figure (1) , Figure (2) , Figure (3) , Figure (5) , Figure (6) and Figure (7) are simple closed curve .

(c) Figure (1) and Figure (2)are polygon .
(d) Figure (2) is convex polygon .

(e) Figure (1) is concave polygon