Question

Help fast??????????????????????????

Answer 1

Its 20 because this is a 90 degree angle and 90-70=20

Explanation:

Answer 2

Answer: hope this helps ♡

m∠ABC = 20°

Explanation:

this is a right angle (90°) so to find m∠ABC:

m∠ABC + 70° = 90°

m∠ABC = 90° - 70°

m∠ABC = 20°