In this case, we'll have to carry out several steps to find the solution.
Step 01:
Data:
Triangle
point 1 (2,3)
point 2 (3, 1)
point 3 (4,5)
Step 02:
scale factor of 0.5
point 1 (2,3) ===> (0.5 * 2 , 0.5 * 3) = ( 1 , 1.5 )
point 2 (3, 1) ===> (0.5 * 3 , 0.5 * 1) = ( 1.5 , 0.5)
point 3 (4,5) ===> (0.5 * 4 , 0.5 * 5) = ( 2 , 2.5)
That is the full solution.