Embedded Files
Helpful Hints
Helpful Hints
Geometry Unit 3 Helpful Hints.pdfEdpuzzle Videos:
Edpuzzle Videos:
Go to Edpuzzle and rewatch the following videos:
Vocabulary:
Vocabulary:
Unit 3 Triangles Flashcards: Quizlet - Interactive Flashcards with different vocabulary review activity options.
Proofs Resources:
Proofs Resources:
Supports/Resources for Writing Proofs:
Writing a Two-Column Proof Checklist
Writing a Geometry Proof Flowchart
Proof Reason Bank - Bank of commonly used reasons within a variety of proofs.
Why doesn't SSA prove that two triangles are congruent? Check out this link!
Theorems and Properties for Proofs.pdfProof Companion Links for Each Lesson/ Problem:
Proof Companion Links for Each Lesson/ Problem:
Lesson 8: Triangle Congruency Proofs
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Lesson 9: Corresponding Parts of Congruent Triangles are Congruent (CPCTC)
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Lesson 10: Additional Triangle Proofs
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Geogebra (Interactive Website):
Geogebra (Interactive Website):
Classifying Triangles - observe how the triangle classification changes from its angles or from its sides as you move one of the vertices.
Relationship Between Sides and Angles in a Triangle - observe the location of the largest angle and the longest side of the triangle, as well as the smallest angle and shortest side.
Exterior Angle Theorem - observe the relationship between an exterior angle and its non-adjacent interior angles of a triangle.
Triangle Inequality Theorem - observe the relationships between the side lengths needed in order to form a triangle or not form a triangle. Here is another one.
Pythagorean Theorem - can be used to find the altitude of a triangle, or to find the outside legs of a triangle if you are given the internal altitude. This demonstrates attributes of isosceles triangles.
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