Question

25 балов
!!!!!!!!!!!!

Answer 1

Объяснение:

6) AB=√12²+9²=√144+81=√225=15
AB=AC; MC=AC-AM=15-12=3;
BC=√9²+3²=√81+9=√90=√9*√10=3√10

7) AK=AB/2=3
BK=√6²-3²=√36-9=√27=√9*√3=3√3

8) AK=(AD-BC)/2=(11-5)/2=6/2=3
AB=√4²+3²=√16+9=√25=5