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Work out the size of angle x. help :)
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Work out the size of angle x. help :)

Work out the size of angle x. help :)-example-1
User Kevinpelgrims
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1 Answer

4 votes

Answer:

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°

User Ben Konyi
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4.3k points
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