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Mensuration, ne information, an be arrange, bjects or pans, wer the relate, rtain numbe, bar graph. In, y with equa, nation., - the graph., a given beIntroduction, we talk aboOut some plane figures as shown below we think of their, s and their boundaries. We need some measures to compare them. We, into these now., ka the following figures (Fig. 10.1). You can make them with a wire or a string, Eyou start from the point S in each case and move along the line segments, you again reach the point S. You have made a complete round of the, 2 Perimeter, A+, (c), (b), (a), Fig 10.1, Chapter 10