Given; y || 2
Prove: m<5+ m<2 + m<6 = 180°
Help

<1=<5(alternative angle)

<3=<6(alternative angle)

<1+<2+<3=180(given)

<5+<2+<6=180(putting <1=<5 and <3=<5)

proved

is there any attachment? what are the equations?

step-by-step explanation:

descending order means to order the polynomials from the term with the largest exponent to the term with the smallest exponent.  

therefore, the correct answer is d.