Question

Find the number of diagonals of a decagon.​

Answer 1

Step-by-step explanation:

35 diagonals each pair of opposite side have 3 diagonal

Answer 2

FORMULAE TO FIND NO. DIAGONALS

$\frac{n(n - 3)}{2}$

SO,

DECAGON HAS 10 SIDES

n = NO. OF SIDES

SO,

$\frac{10(10 - 3)}{2}$

=

$\frac{70}{2}$

=

$35$

$hope \: it \: helps \: mark \: brailiest \: pls$