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ResourceSpotlight
This activity will help students visualize the relationships that arise when some of the congruence conditions are true but one is not. The interactive nature of their constructions will permit them to explore these relationships in a variety of situations.
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Texas Instruments, Inc.
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ResourceSpotlight
Students will explore the inequality relationships that arise when some of the triangle congruence conditions are in place but others are not. The SAS Inequality Theorem and the SSS Inequality Theorem are often referred to as the Hinge Theorem and its converse. These two theorems concern inequalities involving the sides and angles of two triangles.
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Texas Instruments, Inc.
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ResourceSpotlight
In this activity, students will explore AAA and SSS relationships in triangles to support understanding of the concepts of triangle similarity and congruence.
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Texas Instruments, Inc.
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ResourceSpotlight
In this activity, students will explore the median and the centroid of a triangle. They will discover that the medians of a triangle are concurrent. The point of concurrency is the centroid. Students should discover that the center of mass and the centroid are the same for a triangle.
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Texas Instruments, Inc.
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Triangle proofs. Questions & Answer keys.
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West irondequoit Centeral School District
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A helpful scientific calculator that runs in your web browser window.
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Holt Online Learning
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Congruent triangles - Hypotenuse and leg of a right triangle. HL
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Math Open Reference
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Congruent triangles - Why AAA does not work
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Math Open Reference
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This provides 4 to 5 congruent triangle proofs for more complex situations.
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Analyze Math
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Gives almost all the concepts we need to prove congruent triangles(and with explanation)
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MrPerezOnlineMathTutor.com
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