Which of the following polygon has no diagonal? - Vidyadip

MCQ

Which of the following polygon has no diagonal$?$

A
Quadrilateral
B
Heptagon
✓
Triangle
D
Pentagon

✓

Answer

Correct option: C.

Triangle

A diagonal is a line segment joining two opposite vertices. Since we cannot have diagonal to the vertex of either side, as it would lay on top of a side. Hence triangle being only $3$ sides, each vertex joining vertex is its own side. So there are no diagonals in a triangle.

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