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Ilya [14]
2 years ago
15

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

Mathematics
1 answer:
allochka39001 [22]2 years ago
3 0

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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3 years ago
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