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What is the value of x? 15 20 60 180 An isosceles triangle with base angles labeled 60 degree and the other labeled open parenthesis 3 x closed parenthesis degree.
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3 votes
What is the value of x?

15

20

60

180
An isosceles triangle with base angles labeled 60 degree and the other labeled open parenthesis 3 x closed parenthesis degree.

User Alexander Dobernig
by
8.1k points

1 Answer

6 votes
All angles of a triangle add up to 180.
2 of them are 60 -> 60+60=120
This means the last angle is 60
60/3 = 20
User Emish
by
8.4k points
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