142,647 views
13 votes
13 votes
What is the value of x?
E
(2x)°

D

What is the value of x? E (2x)° xº D-example-1
User Thong Yi Xuen
by
3.2k points

1 Answer

18 votes
18 votes

Answer:

30°

Explanation:

Since ED = FD, the ∠DEF = ∠EFD
Since ∠DEF = 2x, ∠EFD is also equal to 2x
The sum of the 3 angles of a triangle is 180°

So x + 2x + 2x = 180
6x = 180
x = 30

User Junichi
by
2.9k points
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