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Click on the links below to view a worked example. 11.1 Investigating Angles of Triangles and Quadrilaterals
 Interior Angles of a Triangle Worked Example
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Exterior and Interior Angles of a Triangle Worked Example
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Exterior Angles of a Triangle Worked Example
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Interior Angles of a Quadrilateral Worked Example
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Exterior Angles of a Quadrilateral Worked Example
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11.2 Investigating Angles and Parallel Lines
Parallel Lines Alternate Angles (Z-Pattern) Worked Example
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Parallel Lines Corresponding Angles (F-Pattern) Worked Example
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Parallel Lines Co-Interior Angles (C-Pattern) Worked Example
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11.3 Investigating Angle Bisectors, Medians, and Altitudes of Triangles
Medians, Altitudes, and Angle Bisectors of a Triangle Worked Example
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Properties of Medians, Altitudes, and Angle Bisectors Worked Example
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