Answer:
A)20°
Step-by-step explanation:
As we know a triangle contains 180°
So according to the question
The equation is
25°+135°+x=180°
160°+x=180°
x=180°-160°
x=20°
<LNK = 20°
[tex]angles \: of \: triangle \: add \: upto \: {180}^{0} \\ in \: that \: scalene \: triangle \\ {25}^{0} + {135}^{0} + < lnk = {180}^{0} \\ < lnk = {180}^{0} - ( {135}^{0} + {25}^{0} ) \\ < lnk = {20}^{0} [/tex]
