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Two of the angles in a triangle measure 31° and 10° what is the measure of the third angle

Sagot :

Answer:

139°

Explanation:

Let the measure of the third angle = x

The sum of the measures of angles in a triangle is 180 degrees.

Thus:

[tex]31\degree+10\degree+x=180\degree[/tex]

We solve the equation for x:

[tex]\begin{gathered} 41\degree+x=180\degree \\ x=180\degree-41\degree \\ x=139\degree \end{gathered}[/tex]

The measure of the third angle is 139°.