Rysunek pomocniczy:

 

a)

$w^2=t^2+y^2$

$t^2=z^2-{\left(x-y\right)}^2\text{lub}{t}^2=w^2-y^2$

$z^2=t^2+{\left(x-y\right)}^2$

 

b)

$r^2=h^2+{\left(w-l\right)}^2$

$h^2=r^2-{\left(w-l\right)}^2$

$p^2=h^2+{\left(l-a\right)}^2$

 

c)

$a^2=d^2+c^2$

$d^2=a^2-c^2$

$b^2={\left(e-d\right)}^2+c^2$

 

d)

$s^2={\left(2r\right)}^2-d^2$

$t^2=r^2-{\left(\frac{d}{2}\right)}^2$

$c^2=r^2-t^2$