Question

Rezolvati pas cu pas
Dau coroana​

Answer 1

Răspuns:

ABCD patrulater convex

<A/7=<B/8=<C/9=<D/12=k

(<A+<B+<C+<D)/(7+8+9+12)=k

360°/36=k

10=k

<A/7=10=>

<A=7*10=70°

<B/8=10

<B=8*10=80

<C/9=10

<C=90

<D/12=10

<D=12*10=120

Explicație pas cu pas: