Question: 19. Pyramid TABCD has a 20-em square base ABCD. The edges that meet at T' are 27 ci long. Make a diagram of TABCD, showing

 19. Pyramid TABCD has a 20-em square base ABCD. The edges

19. Pyramid TABCD has a 20-em square base ABCD. The edges that meet at T' are 27 ci long. Make a diagram of TABCD, showing F, the point of ABCD closest to T. Find the height TF, to the nearest cm. Find the volume of TABCD, to the nearest cc. 20. (Continuation) Let P be a point on edge AB, and consider the possible sizes of angle TPF. What position for P makes this angle as small as it can be? How do you know? 21. (Continuation) Let K, L, M, and / be the points on TA, TB, TC, and TD, respec- tively, that are 18 cm from 7. What can be said about polygon KLMNY Explain

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