Draw a right-angled triangle. Draw the perpendicular bisectors of its sides. Where does the point of concurrence lie ? 

Draw a triangle with the measures given below:

In $△ABC, l\left(AB\right) = 5.5 \mathrm{cm}, l\left(BC\right) = 4.2 \mathrm{cm}, l\left(AC\right) = 3.5 \mathrm{cm}$

Draw a triangle with the measures given below.

In $△STU, l\left(ST\right)=7 \mathrm{cm}, l\left(TU\right) = 4 \mathrm{cm}, l\left(SU\right) = 5 \mathrm{cm}$

Draw a triangle with the measures given below.

In $△PQR, l\left(PQ\right) = 6 \mathrm{cm}, l\left(QR\right) = 3.8 \mathrm{cm}, l\left(PR\right) =4.5 \mathrm{cm}$.

Draw triangle with the measure given below.

In $△MAT, l\left(MA\right)=5.2 \mathrm{cm}, m\angle A=80°, l\left(AT\right)=6 \mathrm{cm}$.