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. If two of the angles in a scalene triangle are 54° and 87°, what is the other angle?

User Vulkan
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2 Answers

5 votes
39 because 54+87=141 and now u have to subtract 141 from 180 so it gives u 39
User Birarduh
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7 votes

The answer is:

⇨ x = 39°

Work/explanation:

Bear in mind that the sum of all the angles in a triangle is 180°.

Given two angles, we can easily find the third one.

Let's call it x.

Next, we set up an equation:


\sf{54+87+x=180}


\sf{141+x=180}

Subtract 141 on each side.


\sf{x=180-141}


\sf{x=39}

Hence, the other angle is 39°.

User Xnakos
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