What this chapter is about
Perimeter is the total length of the boundary of a shape — the distance you would travel if you walked along the outer edge. Area is the measure of the surface enclosed within a boundary — the amount of flat space inside a shape. These two measures are used constantly in architecture, farming, construction, and design. In this chapter, we derive area formulas for parallelograms and triangles and explore the geometry of circles.
---
Learning objectives
- 1Explain class 7 Mathematics
- 2Explain area of a Parallelogram
- 3Explain area of a Triangle
- 4Explain area of Composite Figures
- 5Explain circles
- 6Explain parts of a Circle
Your learning path
Key terms
arcbasechordheightcircleradiusradius (r)semicirclediameter (d)circumferenceFor a right-angled triangle
Connected chapters
11Concepts
22Formulae
8Minutes