Engineering Board Exam Reviewer · Area of Polygons by Coordinates · medium
ECE Board November 1990: In a cartesian coordinate system, the vertices of a triangle are defined by the following points: (-2,0), (4,0) and (3,3). What is the area?
- 8 sq. units
- 9 sq. units
- 10 sq. units
- 11 sq. units
Answer
B. 9 sq. units
Solution
Area = 1/2 |(-2)(0-3)+4(3-0)+3(0-0) | = 1/2(18) = 9 sq. units.
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