Assume a statement true and then show it must be false.
<span>This is also called 'proof by contradiction'.</span>
Answer:
D, not B
Step-by-step explanation:
So using Pythagorean Theorem:

Yep, It's not B, But D.
Hope this helps!
Stay Safe!
M <3 + 138 =190
so m<3 = 180 -138 = 42
r ans t are parallel so m<3 = m<6 then m<6 = 42
answer <span>C.42</span>