Triangle Angle Validation: Do 31°, 122°, and 85° Form a Valid Triangle?

Tree angles have the sizes:

31°, 122°, and 85.

Is it possible that these angles are in a triangle?

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Step-by-step video solution

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00:00 Determine whether the following angles could form a triangle
00:03 The sum of angles in a triangle equals 180
00:07 Substitute in the relevant values according to the given data and proceed to solve
00:11 The sum of angles is greater than 180, therefore they cannot form a triangle
00:17 This is the solution

Step-by-step written solution

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1

Understand the problem

Tree angles have the sizes:

31°, 122°, and 85.

Is it possible that these angles are in a triangle?

2

Step-by-step solution

Let's remember that the sum of angles in a triangle is equal to 180 degrees.

We'll add the three angles to see if their sum equals 180:

31+122+85=238 31+122+85=238

Therefore, these cannot be the values of angles in any triangle.

3

Final Answer

Impossible.

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Can a triangle have a right angle?

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