Triangle Sum Theorem
Presentation
•
Mathematics
•
8th - 10th Grade
•
Easy
Standards-aligned
D-math Professor
Used 11+ times
FREE Resource
8 Slides • 2 Questions
1
MAFS.8.G.1.5
By D-math Professor
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Warm-up (4 mins)
3
Use informal arguments to establish facts about the angle sum and exterior angle of triangles, about the angles created when parallel lines are cut by a transversal, and the angle-angle criterion for similarity of triangles.
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Multiple Choice
What is the sum of any triangle?
270 degrees
90 degrees
180 degrees
360 degrees
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The triangle sum theorem will require that we use angle relationships to solve for exterior angles as well. This includes; supplementary, complementary, vertical, alt. exterior, alt. interior, and corresponding angles.
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Open Ended
What relationship was used to solve the previous example?
MAFS.8.G.1.5
By D-math Professor
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