3.2 Review Worksheet (continued)
19. Show that LMNP is a parallelogram.
20. Show that ABC is a right triangle.
y M (0, 4)
y
4
x
0
–4 –2
–8
–6
2
A (–7, –2)
–2
x
L (–3, 0)
N (3, 0)
B (–3, –3)
–4 –2
2
4
–4
–2
–6
–4
P (0, –4)
C (–4, –7)
–8
190
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