Answer:
The measure of the third angle is
![11\°](https://img.qammunity.org/2020/formulas/mathematics/middle-school/p064zse2x0yqghm5caaad4pxduzqvtd71i.png)
Explanation:
we know that
The sum of the interior angles in a triangle must be equal to 180 degrees
Let
x ---> the measure of the third angle in degrees
The linear equation that represent this situation is
![x+102\°+67\°=180\°](https://img.qammunity.org/2020/formulas/mathematics/middle-school/q9fr1s47zoc5uyreui2w7bu06upnqii0k1.png)
solve for x
![x+169\°=180\°](https://img.qammunity.org/2020/formulas/mathematics/middle-school/kvw4nwq7wdelo7hl9bj74v5vi7ybfgprjf.png)
![x=180\°-169\°](https://img.qammunity.org/2020/formulas/mathematics/middle-school/4xt7m7654t7mtfr68gw0j1sizz4rsgb0xk.png)
![x=11\°](https://img.qammunity.org/2020/formulas/mathematics/middle-school/e42ng8f6fiyg0ntbnd5icphq1ixjrjvovs.png)