a) kąty trapezu  $\alpha =\beta ={90}^{\circ }$  

$\gamma ={67,5}^{\circ }$

$\delta ={112,5}^{\circ }$

kąty sześciokąta $\alpha =\gamma =\delta =\zeta ={90}^{\circ }$  

$\beta ={135}^{\circ }$

$\epsilon ={225}^{\circ }$