Workkeys Math Practice Test 2025 – The All-in-One Guide to Mastering Math Skills for Exam Success!

Question: 1 / 400

In a triangle, if one angle is 40 degrees and another is 60 degrees, what is the measure of the third angle?

80 degrees

In any triangle, the sum of the interior angles is always 180 degrees. In this case, you already have two angles: one measures 40 degrees and the other measures 60 degrees. To find the measure of the third angle, you can use the following equation:

Third angle = 180 degrees - (first angle + second angle).

Substituting the known values:

Third angle = 180 degrees - (40 degrees + 60 degrees)

Third angle = 180 degrees - 100 degrees

Third angle = 80 degrees.

Thus, the measure of the third angle is 80 degrees. This calculation confirms that the answer is correct, as it meets the fundamental property of triangles where the total interior angle sum equals 180 degrees.

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100 degrees

120 degrees

60 degrees

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