Is line p perpendicular to line r?
Hint
What does that little box in the corner mean?
Answer
Yes, p ⊥ r.
Is line q perpendicular to line r?
Remember that p and q are parallel lines. What are some characteristics of parallel lines?
Yes, q ⊥ r.
Which of these lines are parallel and which are perpendicular?
"Parallel" and "perpendicular" are kind of the opposite of one another.
b ⊥ c, d ⊥ c, and b || d
What is the measure of ∠RZQ?
Vertical angles are always what?
90°
If the measure of ∠UYZ is 19°, what is the measure of ∠WYP?
Knowledge of vertical angles and perpendicular lines is equally useful.
71°
Which lines are parallel? Which lines are perpendicular?
What can you prove based solely on the picture?
We can only prove that e ⊥ g and f ⊥ h.
The equation of line a is y = -⅕x – 1. If line b is perpendicular to line a and intersects line a when x = 5, what is the equation of b?
To find a line, we need the slope and a point. We're given both…somewhat indirectly.
The equation of line b is y = 5x – 27.
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