23. In the figure, CD and EF are hori are vertical line segments. Find the length of of 27 units, fin G(2 , 31 The coordinates of four points A, B. C (14, 18) respectively. If AB = 3CD, fir 24, The figure shows a square PORS, which is formed by horizontal and (32. C(-2, -7), D(-8, -7) and E(-8 vertical line segments. The perimeter of PORS is 96 units. coordinate plane. If an ant crawls (a) Find the side length of PORS. distance that the ant crawls. (b) Find the coordinates of Q, R and 5. Challenging Questions 33. Figure (a) shows a quadrila 68 units. 8 ,- D(-7k, 2k + 11) 25, The figure shows a line segment joining C(6, 11) and D(6, -3). (a) Find the length of CD. (b) If N is a point on CD such that CN = ND, find the coordinates of N. 11 - 3 O C(-7k, k - 5) Figure 20. A(7, -9), B(-4, -9) and P are three points on a straight line. If AB = BP, Macy Tsu find the coordinates of P. (a) Find the value (b) What kind of q 27. In the figure, AB is a horizontal line segment. If the distance (c) ABCD is divi between A and B is b units, find the value of a. Find the coor A(a - 7, 11) B(3a - 2, b) O