ĐGTD ĐH Bách khoa - Tư duy Toán học - Khoảng cách từ một điểm đến đường thẳng

$\sqrt{2}$

$\sqrt{3}$

2

$\frac{\sqrt{3}}{2}$

2a

$a\sqrt{3}$

a

$a\sqrt{5}$

$\frac{3a\sqrt{2}}{2}$

$\frac{2a\sqrt{3}}{3}$

$\frac{4a\sqrt{5}}{3}$

$\frac{a\sqrt{11}}{2}$

$\frac{3a\sqrt{2}}{2}$

$\frac{4a\sqrt{3}}{3}$

$\frac{2a\sqrt{5}}{5}$

$\frac{5a\sqrt{6}}{2}$

$a\sqrt{2}$

$\frac{a\sqrt{6}}{2}$

$\frac{a\sqrt{3}}{2}$

$a\sqrt{3}$

$a\sqrt{2}$

$\frac{a\sqrt{6}}{2}$

$\frac{a\sqrt{3}}{2}$

$\frac{a\sqrt{6}}{3}$

$\frac{a\sqrt{3}}{3}$

$\frac{a\sqrt{3}}{4}$

$\frac{a\sqrt{2}}{3}$

$\frac{a\sqrt{2}}{4}$

$a\sqrt{2}\cot \alpha$

$a\sqrt{2}\tan \alpha$

$\frac{a\sqrt{2}}{2}\text{cos}\alpha$

$\frac{a\sqrt{2}}{2}\sin \alpha$

$\frac{3a\sqrt{2}}{2}$

$\frac{7a\sqrt{5}}{5}$

$\frac{8a\sqrt{3}}{3}$

$\frac{5a\sqrt{6}}{6}$

$a\sqrt{\frac{2}{3}}$

$a\sqrt{\frac{6}{11}}$

$a\sqrt{\frac{7}{5}}$

$a\sqrt{\frac{4}{7}}$

$a\sqrt{2}$

$2\mathrm{a}$

$2a\sqrt{3}$

$a\sqrt{3}$

A', B, C'

B, C, D

B', C', D'

A, A', D'