Question

Tren tia Ax co cac diem B,C,D sao cho AC=1cm,AB=4cm,BD=2cm.Tinh do dai cach BC va CD

Answer 1

AD=4+2=6 => AC+BC+CD=6  => 1+BC+2=6 => BC = 3

=> CD = 3+2=5

vay BC = 3 cm, CD= 5 cm