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116_G3U7_WB_CA_˙—» ¿º 2011.4.5 8:21 PM ˘ ` 18 PDF_In 2540DPI 150LPI T

116-P2-2

1. Find the clock that shows an obtuse angle while considering the smaller
angle made by the hour and minute hands.

11 12 1 11 12 1
10 2 10 2

93 93

84 84
765 765

11 12 1 11 12 1
10 2 10 2

93 93

84 84
765 765

11 12 1
10 2
93
84

765

2. How many acute triangles can be found in the figure below?
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