∆ ABM ∞ ∆ CDM
CM = DC
AM _ AB
x = 30
39 – x_ 15
x = 2
39 – x
x = 2 (39 – x)
x = 78 – 2x
3x = 78
x = 26
ответ: 26
∆ ABM ∞ ∆ CDM
CM = DC
AM _ AB
x = 30
39 – x_ 15
x = 2
39 – x
x = 2 (39 – x)
x = 78 – 2x
3x = 78
x = 26
ответ: 26