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Vertices (1,1), (3,1) and (2,5) form a triangle of what area in square units?
A6
B8
C2
D4
Answer & Solution
Correct answer: D. 4
The base from (1,1) to (3,1) is 2 and the height to (2,5) is 4, so the area is half of 8 = 4.
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