<span>that the patterns of polarity matched up on both sides is the answer </span>
Explanation:
Pretty sure the answer is D if not its B
You need to ask specific questions and people will answer
Oh, yeah? Then why'd you post this, hmm?
Answer:
A straight angle measures 180°. ... An angle can be measured using a protractor, and the angle of measure 90 degrees is called a right angle. In a right angle, the two arms are perpendicular to each other. When the right angle is divided into two equal parts each angle measures 45°.
