C e Figure 4 shows a geometric model ABCD in the form of tetrahedron. It is found that ZACB = 60° AC AD 20 cm, BC= BD = 12 cm and CD = 14 cm. B 23-302 A ཤ་ D Figure 4 Let P be a movable point on the slant edge AB. Describe how LCPD varies as P moves from A to B. Explain your answer. (2 marks) ) s will not be mark "

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