If A(2,−1), B(3,4), C(−2,3) and D(−3,−2) be four points in a coordinate plane, show that ABCD is a rhombus but not a square. Find the area of the rhombus.
If A(2,−1), B(3,4), C(−2,3) and D(−3,−2) be four points in a coordinate plane, show that ABCD is a rhombus but not a square. Find the area of the rhombus.
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Q2
If the length of each edge of a regular tetrahedron is 'a', then its surface area is (a) √3a2 sq. units (b) √32a2 sq. units (c) √23a2 sq. units (d) √6a2 sq. units
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Q3
The area of the triangle formed by the line x + 3y = 12 and the coordinate axes is
(a) 12 sq units
(b) 18 sq units
(c) 24 sq units
(d) 30 sq units