Question

Triangle DBC is equilateral,
AB = AC. Work out the size of angle x.


Pls asap​

Answer 1

x = 21º

Explanation:

∆ ABC is isosceles therefor

Angles B and C are congruent

(180 - 18)/2 = 162/2 = 81º

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∆ BCD is equilateral therefor all angles are 60º

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x = = 81 - 60

x = 21º