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15-06-2021
Mathematics

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

Pls asap

Triangle DBC is equilateralAB AC Work out the size of angle x Pls asap class=

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Аноним Аноним

15-06-2021

Answer:

x = 21º

Step-by-step explanation:

∆ ABC is isosceles therefor

Angles B and C are congruent

(180 - 18)/2 = 162/2 = 81º

------------------

∆ BCD is equilateral therefor all angles are 60º

---------------------------

x = = 81 - 60

x = 21º

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