Consider a triangle represented by A(0, 0), B(1, 1), C(5, 2). The triangle is rotated by 45 degrees about a point P(–1, –1). The co-ordinates of the new triangle obtained after rotation shall be ..................
A. A'(-1,√2 - 1), B'(-1,2√2 - 1), C'(3/2√2 – 1, 9/2√2 – 1)
B. A'(√2 - 1, -1), B'(2√2 - 1, -1), C'(3/2√2 – 1, 9/2√2 – 1)
C. A'(-1, √2 - 1), B'(2√2 - 1, -1), C'(3/2√2 – 1, 9/2√2 – 1)
D. A'(-1, √2 - 1), B'(2√2 - 1, -1), C'(9/2√2 – 1, 3/2√2 – 1)
Answer:A
Consider a triangle represented by A(0, 0), B(1, 1), C(5, 2). The triangle is rotated by 45 degrees about a point P(–1, –1). The co-ordinates of the new triangle obtained after rotation shall be ..................
A. A'(-1,√2 - 1), B'(-1,2√2 - 1), C'(3/2√2 – 1, 9/2√2 – 1) B. A'(√2 - 1, -1), B'(2√2 - 1, -1), C'(3/2√2 – 1, 9/2√2 – 1) C. A'(-1, √2 - 1), B'(2√2 - 1, -1), C'(3/2√2 – 1, 9/2√2 – 1) D. A'(-1, √2 - 1), B'(2√2 - 1, -1), C'(9/2√2 – 1, 3/2√2 – 1)