In the quadrilateral ABCD, ∠ DAB = 60 °∠ DCB ° ad = AB, try to prove that the line CD BC AB can form a right triangle ∠DCB=30° ∠DCB=30°∠DCB=30°∠DCB=30°∠DCB=30°∠DCB=30°∠DCB=30°∠DCB=30°∠DCB=30°∠DCB=30°∠DCB=30°∠DCB=30°∠DCB=30°∠DCB=30°∠DCB=30°∠DCB=30°∠DCB=30°

In the quadrilateral ABCD, ∠ DAB = 60 °∠ DCB ° ad = AB, try to prove that the line CD BC AB can form a right triangle ∠DCB=30° ∠DCB=30°∠DCB=30°∠DCB=30°∠DCB=30°∠DCB=30°∠DCB=30°∠DCB=30°∠DCB=30°∠DCB=30°∠DCB=30°∠DCB=30°∠DCB=30°∠DCB=30°∠DCB=30°∠DCB=30°∠DCB=30°


AD=AB,

Elden Ring Premiere

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