Given m∠6 + m∠7 = 180, which postulate or theorem justifies that ℓ || m?

fist on the left goes with the third on the right. second on the left goes with the fourth on the right. third on the left goes with the second on the right. the fourth on the left goes with first on the right

cosine

step-by-step explanation:

a and c

step-by-step explanation:

6mm^3 or .6cm^3

      216

      /   \

  36     6

  /   \     /

6     6   6

factor trees are nice.