An angle formed outside of the circle by the intersection of two secants, two tangents or a tangent and a secant is called an exterior angle of the circle. |
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A line that is tangent to two circles is called a common tangent of the circles. Common tangent is called external tangent if ... |
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Given a triangle, extend two sides in the direction opposite their common vertex. The circle tangent to these two lines and to the other side of ... |
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In a triangle, the longer side is opposite the greater angle. In a triangle, the sum of the lengths of two sides is always greater than ... |
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