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14 votes
14 votes
The the answer to X… the triangle = 180

The the answer to X… the triangle = 180-example-1
User Sissy
by
2.6k points

2 Answers

17 votes
17 votes

Answer:

20

Explanation:

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User Shashika Virajh
by
2.5k points
21 votes
21 votes

Answer:

20

Explanation:

This triangle is right angles.

Sum of remaining two angles ( except right angle ) is 90.

3x - 1 + 31 = 90

3x + 30 = 90

3x = 90 - 30

3x = 60

x = 60 / 3

x = 20

User NiallD
by
2.6k points