Please it's all due ​

An isosceles triangle is a triangle that has two sides of equal length.

Sometimes it is specified as having exactly two sides of equal length, and sometimes as having at least two sides of equal length, the latter version thus including the equilateral triangle as a special case.

where,

a-Side

b-Base

Step 1 of 2

Rewrite the given:

The perimeter of an isosceles triangle is  

The base is two-third of the sum of equal sides.

Let the equal sides be  

base

Question no 19

2p ( 3 - q )

Question no 20

18

I HOPE IT WILL HELP YOU.

Sry if it is wrong.

20

step-by-step explanation:

3+3+3+2*2*2+29*12 = 365

step-by-step explanation: