SOLUTION: The isometric sides of an isosceles triangle are 2 dm longer than one-fifth of its base. Knowing that its perimeter is 10.30 dm, what are the dimensions of this triangle?

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Question 1173110: The isometric sides of an isosceles triangle are 2 dm longer than one-fifth of its base.
Knowing that its perimeter is 10.30 dm, what are the dimensions of this triangle?
Found 2 solutions by Boreal, ikleyn:
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
the base is 5x
the sides are x+2
the perimeter is 2(x+2)+5x=10.3 dm
2x+4+5x=10.3
7x=6.3
x=0.9 dm
The base is 4.5 dm
each side is 2.9 dm

Answer by ikleyn(52781) About Me  (Show Source):
You can put this solution on YOUR website!
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In Geometry,  the term  "congruent sides"  is used.

The term  "isometric sides"  is not used in  Geometry.