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Two angles in a triangle equal 20° and 130°. What is the measure of the third angle?

User WuTangTan
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Final answer:

The measure of the third angle in the triangle is 30°.


Step-by-step explanation:

In a triangle, the sum of the measures of the three angles is always 180°. So, to find the measure of the third angle, we can subtract the sum of the other two angles from 180°.

Let's call the measure of the third angle x.

So, we have the equation:

x + 20° + 130° = 180°

Simplifying, we get:

x + 150° = 180°

Subtracting 150° from both sides, we get:

x = 30°

Therefore, the measure of the third angle is 30°.


Learn more about Triangle angles

User ClearLogic
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