Question

Area of quadrilateral a)1/2×d×
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Answer 1

Answer:

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Area of Triangle ABC

Area(ΔABC)=12∣∣ ∣∣−3−13142111∣∣ ∣∣=12|−3×(4−2)+(−1)×(2−1)+3×(1−4)|=12|−6−1−9|=12×16=8sq.unitsArea(ΔABC)=12|−3−13142111|=12|−3×(4−2)+(−1)×(2−1)+3×(1−4)|=12|−6−1−9|=12×16=8sq.units

Area of Triangle ACD

Area(ΔADC)=12∣∣ ∣∣−3131−2211