... s.đ.đ1,13 2, 143,154,165,176,187,198 ,20 9 ,21 10 ,22 11 ,23 12, 24o30=αACBBAC 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 τ τ τ τAXBY ZC 19 20 ... rãnh:oo30 24 360 .2 Z360.p===α)rãnh(64 24 p2Z===τ 2 4.3 24 p2.mZq ===6y =τ=oo6030 .2. q ==α=γ)rãnh(430 120 120 oo==α=λ - Vẽ hình sao s.đ.đ1,13 2, 143,154,165,176,187,198 ,20 9 ,21 10 ,22 11 ,23 12, 24o30=αACBBAC ... rãnh:oo30 24 360 .2 Z360.p===α)rãnh(64 24 p2Z===τ 2 4.3 24 p2.mZq ===56.86,0.y ==τβ=oo6030 .2. q ==α=γ)rãnh(430 120 120 oo==α=λ86.08.0 ÷=β - Vẽ hình sao s.đ.đ1,13 2, 143,154,165,176,187,198 ,20 9 ,21 10 ,22 11 ,23 12, 24o30=αACBBAC...