Question

please answer the questions​

Answer 1

Answer:

4.a) solve

there are 5 diagnols are drawn on a pentagon

by using formula.

$n(n - 3) \div 2$

$n = number of sides$

$5(5 - 3) \div 2$

$(5 \times 2 ) \div 2$

$10 \div 2 = 5$