(a)[1]
Determine the value of $x$.
(b)[2]
Square $ABCD$ and isosceles triangle $EFG$ have equal perimeters. Calculate the length of $FG$.
Mathematics 0580 · IGCSE · Area and perimeter
Area and perimeter — practice question
ABCD forms a square with $AB = (x - 4)$ cm and $BC = 7$ cm. EFG is an isosceles triangle with the equal sides indicated, and each of those equal sides is $(x - 1)$ cm.