Question

14 multiple choice 1 point which is a true statement about angles 1 and 2 shown below? 15 multiple choice 1 point what is the relationship of lines ab and cd to each other?

Explanation:

Step1: Recall angle - relationship definitions

Complementary angles add up to 90 degrees, supplementary angles add up to 180 degrees. Acute angles are less than 90 degrees and obtuse angles are greater than 90 degrees but less than 180 degrees. Angles 1 and 2 form a linear - pair. A linear - pair of angles is supplementary.

Step2: Analyze lines in the second question

Parallel lines are lines in a plane that do not intersect. Intersecting lines cross at a point. Perpendicular lines are intersecting lines that form 90 - degree angles. "Right lines" is not a standard geometric term for the relationship between two lines. Lines AB and CD do not intersect and are in the same plane, so they are parallel.

Answer:

1. C. ∠1 is supplementary to ∠2.
2. D. Parallel lines