Tip:A–D to answerE for explanationV for videoS to reveal answer
If the vertices of a triangle are (1,2), (2,5) and (4,3) then the area of the triangle is
- A.
3 sq. units
- B.
4 sq. units
(Correct Answer) - C.
6 sq. units
- D.
8 sq. units
Correct Answer: 4 sq. units
Explanation
Area = 21[x1(y2−y3)+x2(y3−y1)+x3(y1−y2)]
=21[1(5−3)+2(3−2)+4(2−5)]
=21[(1×2)+(2×1)+4×(−3)]
=21[2+2−12]
=21[−8]=21×8
=4 square units
Explanation
Area = 21[x1(y2−y3)+x2(y3−y1)+x3(y1−y2)]
=21[1(5−3)+2(3−2)+4(2−5)]
=21[(1×2)+(2×1)+4×(−3)]
=21[2+2−12]
=21[−8]=21×8
=4 square units
