✓ Lesson Check

Do you know HOW?

1. Draw a line l and a point P not on the line. Construct the line through P parallel to line l.
2. Draw Q R ↔ modified q r with left right arrow above  and a point S on the line. Construct the line perpendicular to Q R ↔ modified q r with left right arrow above  at point S.
3. Draw a line w and a point X not on the line. Construct the line perpendicular to line w at point X.

Do you UNDERSTAND?

4. In Problem 3, is A C ¯ eh c bar  congruent to B C ¯ ? b c bar , question mark  Explain.
5. Suppose you use a wider compass setting in Step 1 of Problem 4. Will you construct a different perpendicular line? Explain.
6. Compare and Contrast How are the constructions in Problems 3 and 4 similar? How are they different?