LEARN MATH STEP BY STEP THROUGH VERY EASY PROCESS

AREA & PERIMETER OF PLANE FIGURE

**PERIMETER AND AREA OF PLANE FIGURE –**

**Perimeter –**

**The perimeter of a plane figure is the length of its
boundary, i.e. the sum of its sides. The unit of perimeter is the same as the
unit of length.**

**Area –**

**The area of a plane figure is the measure of the surface
enclosed by its boundary, i.e. the surface enclosed by its sides.**

**It is measured in square units such as square centimetres or
square meters, written or denoted as cm² or m² respectively. In this chapter,
we should like to learn the formulae for area & perimeter of triangles and
quadrilaterals.**

**PERIMETER AND AREA OF TRIANGLE –**

** 1**

**i) Area of Triangle = ---------- X Base X Corresponding Height **

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** 2**

**ii) Perimeter
of △ ABC = (a + b + c), where a, b, c are the sides of the triangle.**