Question

Analyze the diagram below and complete the instructions that follow.

Answer 1

Option (B) is the answer to ur questions..!!
{as to my preference I have marked/named the lines }

Answer 2

Hello, there!

<3 and 70 degrees are "vertical angles," and so m<3 is 70 degrees.

<1 and 70 degrees are "complementary angles," and so <1 = 90 - 70, or 20 (degrees).

Then m<3 - m<1 = 70 degrees - 20 degrees = 50 degrees (answer)