Question

Work out the size of angle x. help :)

Answer 1

x = 54°

Explanation:

(5-2)·180° = 540°, which is the total amount of degrees inside a pentagon

if it's regular then each angle is equal so m∡B = 540/5 or 108°

∠DBC ≅ ∠CDB because ΔCBD is isosceles

half of 108 is 54°