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3. The measures of the three angles of a triangle a

are 20°, 115, and x. What is the value of x?

1 Answer

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Final answer:

The value of x is 45°.


Step-by-step explanation:

In a triangle, the sum of the measures of the three angles is always 180°. Therefore, we can set up an equation:

20° + 115° + x° = 180°

Combine like terms: 135° + x° = 180°

Subtract 135° from both sides: x° = 45°

Therefore, the value of x is 45°.


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