Question

va rog ajutati ma dau coroana multumesc frumos[tex][/tex]

Answer 1

Răspuns:

Explicație pas cu pas:

a. BE bisect deci si unghiul EBD are x grade

x+x+90+40=180

2x+130=180

2x=180-130

2x=50, x=50:2=25

b. BH bisect deci y=46

x+x+46+46+18=180

2x+92+18=180

2x+110=180

2x=180-110

2x=70, x=70:2=35

c.EB bisect deci y=2x-1

BH bisect deci unghiul HBC masoara x+2

y+2x-1+x+2+x+2=180

2x-1+2x-1+x+2+x+2=180

6x+2=180

6x=180-2

6x=178, x=178:6

d. x+137=18=

x=180-137=43

x+y+y=180

43+2y=180

2y=180-43

2y=137, y=137:2=68,5