(C) cause 17•3=51+39= 90 and that’s a 90 degree
Answer:
dunno
Step-by-step explanation:
hope this helps has hdhd
Answer:
Step-by-step explanation:
Step-by-step explanation:
the answer is in the above image
Answer:
Perpendicular
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Step-by-step explanation:
Given




Required
Is AB and CD parallel?
First, we need to calculate the slope (m) of AB and CD

For AB:


So:





For CD:


So:




For Lines to be parallel, the slope must be equal:
i.e. 
This condition is not true because:

For Lines to be perpendicular, the slope must be:

This implies:



<em>Hence, the lines are perpendicular</em>