Contents Problem 003 : triangle, interior point, 10°, 10°, 30°, 100° Problem 013 : quadrilateral, diagonal, 13°, 13°, 30°, 86° Problem 019 : quadrilateral, diagonal, 20°, 20°, 80°, 100° Problem 023 : quadrilateral, diagonal, x, 2x, 2x, 4x, 4x Problem 027 : quadrilateral, diagonal, 30°, 33°, 76°, 98° Problem 029 : triangle, interior point, 10°, 20°, 40°, 50° Problem 030 : triangle, interior point, 90°, 2x, 3x, 5x Problem 036 : quadrilateral, diagonal, 27°, 38°, 54°, 63° Problem 037 : quadrilateral, diagonal, 20°, 30°, 30°, 50° Problem 044 : triangle, interior point, 10°, 20°, 20°, 30° Problem 050 : quadrilateral, diagonal, 12°, 30°, 42°, 72° Problem 056 : triangle, interior point, x, 2x, 3x, 4x, 5x Problem 058 : triangle, interior point, 20° , 30° , 30° , x, 2x Problem 067 : triangle, interior point, 10°, 20°, 20°, 30° Problem 073 : quadrilateral, diagonal, 10°, 20°, 40°, 100° Problem 074 : triangle, interior point, 10°, 20°, 30°, 40° Problem 076 : quadrilateral, diagonal, 30°, 60°, 60°, α Problem 080 : quadrilateral, diagonal, 30°, 40°, 60°, 70° Problem 084 : equilateral triangle, interior point, x, 3x, 5x Problem 085 : quadrilateral, diagonal, 20°, 30°, 40°, 130° Problem 087 : triangle, interior point, perpendicular, 45° Problem 088 : triangle, interior point, 10°, 10°, 10°, 30° Problem 090 : triangle, interior point, 10°, 20°, 30°, 40° Problem 094 : triangle, interior point, perpendicular, 30°, α, 30° - α Problem 096 : triangle, interior point, 6°, 12°, 24°, 30° Problem 100 : triangle, interior point, 6°, 12°, 24°, 30° Problem 103 : triangle, interior point, x, 2x, 2x, 2x, 3x Problem 107 : triangle, interior point, 6°, 24°, 30°, 48° Problem 108 : quadrilateral, diagonal, 20°, 30°, 40°, 70° Problem 111 : triangle, interior point, 10°, 20°, 40°, 70° Problem 112 : triangle, interior point, 10°, 20°, 30°, 80° Problem 114 : triangle, interior point, 6°, 12°, 48°, 54° Problem 116 : quadrilateral, diagonal, 20°, 30°, 40°, 60° Problem 117 : triangle, interior point, 6°, 24°, 48°, 66° Problem 118 : triangle, interior point, 10°, 10°, 20°, 100° Problem 119 : equilateral triangle, exterior point, 60° Problem 124 : triangle, interior point, 10°, 10°, 20°, 40° Problem 126 : quadrilateral, diagonal, 10°, 20°, 60°, 60° Problem 129 : quadrilateral, diagonal, 10°, 30°, 40°, 70° Problem 131 : triangle, interior point, 12°, 18°, 36°, 36° Problem 132 : triangle, interior point, 30° , α, 30° - α, 60° - α Problem 133 : triangle, interior point, 10°, 20°, 30°, 40° Problem 134 : triangle, interior point, 10°, 20°, 30°, 40° Problem 137 : triangle, interior point, 5°, 10°, 20°, 20° Problem 140 : triangle, interior point, 20°, 30°, 40°, 50° Problem 142 : triangle, interior point, 10°, 10°, 20°, 100° Problem 143 : triangle, interior point, 20°, 20°, 30°, 40° Problem 144 : quadrilateral, diagonal, 30°, 90°, x, x, 2x Problem 146 : triangle, interior point, 10°, 20°, 30°, 40° Problem 147 : triangle, interior point, 10°, 20°, 60°, 60° Problem 148 : quadrilateral, diagonal, 10°, 30°, 60°, 60° Problem 149 : quadrilateral, diagonal, 20°, 30°, 30°, 80° Problem 151 : triangle, cevian, perpendicular, x, x, 2x Problem 152 : triangle, interior point, 10°, 20°, 40°, 70° Problem 153 : quadrilateral, diagonal, 20°, 20°, 50°, 100° Problem 154 : triangle, interior point, 10°, 20°, 30°, 100° Problem 155 : quadrilateral, diagonal, x, x, 2x, 2x, 3x Problem 156 : quadrilateral, diagonal, 20°, 30°, 100°, 110° Problem 157 : triangle, interior point, 10°, 10°, 30°, 70° Problem 158 : quadrilateral, diagonal, 20°, 40°, 40°, 70° Problem 159 : triangle, interior point, perpendicular, x, 2x, 3x, 5x Problem 160 : triangle, interior point, 10°, 20°, 30°, 50° Problem 161 : triangle, interior point, 10°, 10°, 20°, 30° Problem 163 : quadrilateral, diagonal, 20°, 30°, 40°, 110° Problem 165 : quadrilateral, diagonal, 20°, 30°, 60°, 100°
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