Topic 5: Parallel. Perpendicular, or neither?!
For questions 19-21, determine if AB and CD are parallel, perpendicular or neither.
19. 4(-11,5), B(-8, 4), C(8, -7), D(-1,-4)
Slope of AB Slope of CD Types of Lines
20. A(-3, 8), B(1, 15), C(10,-9), D(3,-5)
Slope of AB Slope of CD
Types of Lines
21. A(9, -3), B(9,4), C(-2, 10), D(-2, 6)
Slope of AB Slope of CD
Types of Lines
Gina Wilson (All Things Algebra, 2014