LEARN MATH STEP BY STEP THROUGH VERY EASY PROCESS

PERIMETER OF TRIANGLE

**PERIMETER OF A TRIANGLE –**

**The term ****Perimeter**** is already known by us, now we will learn the calculation of perimeter of triangle, let us recall the definition of perimeter.**

__Perimeter__ – The perimeter (P) of a closed plane curve is the total length of the curve. The unit of the perimeter is measured by the unit of length.

__Triangle__ – In this section he have to learn, how to calculate the perimeter of a triangle.

**The Perimeter of a Triangle – **

**the perimeter of a triangle PQR**** = the sum of the lengths of its three sides**

** = PQ + QR + PR = a + b + c**

__Example.__ – The perimeter of a ∆ PQR in which PQ = 10 cm, QR = 25 cm, and PR = 15 cm. So, the perimeter of
the ∆ PQR = sum of sides of a triangle =
sum of (10 + 25 + 15) cm = 50 cm.