Question 922924

Isosceles Triangle:

Two {{{equal}}} sides.
Two {{{equal}}} angles.


given: 

The legs lengths: {{{x + 1}}} and {{{-x + 7}}}

since we have an isosceles triangle {{{x + 1=-x + 7}}}

solve {{{x + 1=-x + 7}}} for {{{x}}}

{{{x + x=-1 + 7}}}

{{{2x=6}}}

{{{x=6/2}}}

{{{x=3}}}

now we can find the base 

the base has length {{{3x - 3}}} ...plug in {{{x=3}}}

{{{3*3 - 3=9-3=6}}}

so, the base has length {{{6}}}


and the length of the legs are: {{{x + 1=3+1=4}}} and {{{-x + 7=-3+7=4}}}