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Construction of Quadrilaterals — Maths STD 8 — Question

Maharashtra BoardEnglish MediumSTD 8MathsConstruction of Quadrilaterals1 Mark
Question
Fill in the blanks.
A pentagon has ______ diagonals.
✓

Answer

A pentagon has 5 diagonals. Solution: If n is the number of sides, the number of diagonals $=\frac{\text{n}(\text{n}-3)}{2}$ $=\frac{5(5-3)}{2}$ $=5$

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