principal diagonal

ریشه

The term 'principal diagonal' combines 'principal', meaning 'main' or 'chief', and 'diagonal', referring to a line connecting two opposite corners of a shape.

مثال

• The principal diagonal of a square divides it into two congruent triangles.
• The principal diagonal of a rectangle is longer than its other diagonals.
• The principal diagonal of a cube connects opposite corners.