Question

Represent the above relationship between the number of triangles and the perimeter of the figures they form by filling in the table below.

Number of Triangles Perimeter
1

2

3

Answer 1

In first triangle add all the sides given that will be your perimeter..

Answer 2

Add all the lengths of all the sides that are only outside the figure and don't include the inner lengths..

Answer 3

Like:

For first triangle:

What is 6 + 6 + 5 = ??

Answer 4

17

Answer 5

Yes..

Like wise:

6 + 5 + 6 + 5 = ?

Answer 6

Like wise in third:

6 + 5 + 6 + 5 + 5 = ??

Answer 7

22

Answer 8

Yes..

Do the same for third one..

Answer 9

27

Answer 10

So well done..