# Angles

Parent topic:
Geometry
• ### Parallel Lines and the Angle in a Triangle: IM 8.1.16

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GeoGebra Classroom Activities

• ### Alternate Interior Angles: IM 8.1.14

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GeoGebra Classroom Activities

• ### Adding the Angles in a Triangle: IM 8.1.15

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GeoGebra Classroom Activities

• ### Polyon Interior Angles: Investigations

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Tim Brzezinski

• ### Using Equations to Solve for Unknown Angles: IM 7.7.5

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GeoGebra Classroom Activities

• ### Solving for Unknown Angles: IM 7.7.4

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GeoGebra Classroom Activities

• ### Relationships of Angles: IM 7.7.1

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GeoGebra Classroom Activities

• ### Building Polygons (Part 1): IM 7.7.6

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GeoGebra Classroom Activities

• ### Adjacent Angles: IM 7.7.2

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GeoGebra Classroom Activities

• ### Building Polygons (Part 2): IM 7.7.7

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GeoGebra Classroom Activities

• ### Triangles with 3 Common Measures: IM 7.7.8

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GeoGebra Classroom Activities

• ### Nonadjacent Angles: IM 7.7.3

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GeoGebra Classroom Activities

• ### Drawing Triangles (Part 1): IM 7.7.9

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GeoGebra Classroom Activities

• ### Tessellating Polygons: IM 8.9.3

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GeoGebra Classroom Activities

• ### Regular Tessellations: IM 8.9.2

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GeoGebra Classroom Activities

Activity

• ### Transversal Intersects Parallel Lines

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Tim Brzezinski

• ### Exterior Angles of Polygons

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Anthony OR 柯志明

• ### Triangle Angle Theorems

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Tim Brzezinski

• ### Protractor Quiz

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Anthony OR 柯志明

• ### Triangle Exterior Angle

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Tim Brzezinski

• ### Triangle Angle Sum Theorem

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Tim Brzezinski

• ### Illustrations Without Words

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Tim Brzezinski

• ### Complementary Meaning?

Activity

Tim Brzezinski