Sagot :
Adım adım açıklama:
12-16-20 özel üçgende AD=12
9-12-15 özel üçgende x= 15
A açısı 90°
30-40-50 özel üçgende
x= 40 olur
Cevap:
x 15 dir
20 karesi -16nin karesi
400-256=144
144+9karesi yani81=225
225=15
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