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This page provides a list of educational videos related to Triangle Congruence. You can also use this page to find sample questions, apps, worksheets, lessons , infographics and presentations related to Triangle Congruence.
Reason about the triangle congruence postulates
By Khan Academy
There are some cases when SSA can imply triangle congruence, but not always. This is why it's not like the other triangle congruence postulates/criteria.
Triangle Congruence by SSS and SAS - How to Prove Triangles Congurent
By MrPilarski
YouTube presents Triangle Congruence by SSS and SAS - How to Prove Triangles Congurent, an educational video resource on math.
Geometry - Triangle Congruence - SSS SAS ASA postulate through constructions.wmv
By Soowook Lee
Geometry - Triangle Congruence - SSS SAS ASA postulate through constructions.wmv
Reason about the triangle congruence postulates
By Khan Academy
Sal explains what it means for triangles to be congruent and what is a postulate/axiom. He also presents the SSS congruence postulate/criterion and its justification.
Finding area using similarity and congruence | Similarity | Geometry | Khan Academy
By Khan Academy
Example of using similarity and congruence to find the area of a triangle
Reason about the triangle congruence postulates
By Khan Academy
Sal introduces and justifies the SSS, SAS, ASA and AAS postulates for congruent triangles. He also shows that AAA is only good for similarity. For SSA, better to watch next video.
Other triangle congruence postulates | Congruence | Geometry | Khan Academy
By Khan Academy
SSS, SAS, ASA and AAS postulates for congruent triangles. Showing AAA is only good for similarity and SSA is good for neither
Similar triangles 1
By Khan Academy
Sal reviews all the different ways we can determine that two triangles are similar. This is similar to the congruence criteria, only for similarity!
Solving problems with similar and congruent triangles
By Khan Academy
Sal uses the similarity of triangles and the congruence of others in this multi-step problem to find the area of a polygon.
Similar triangles 2
By Khan Academy
Sal reviews all the different ways we can determine that two triangles are similar. This is similar to the congruence criteria, only for similarity!
Congruent Triangle Proof Example
By Khan Academy
Proving that a point is the midpoint via triangle congruency. All Khan Academy content is available for free at www.khanacademy.org
Determine whether two triangles are congruent
By Khan Academy
Sal explains what it means for triangles to be congruent and what is a postulate/axiom. He also presents the SSS congruence postulate/criterion and its justification.
Determine whether two triangles are congruent
By Khan Academy
Sal explains what it means for triangles to be congruent and what is a postulate/axiom. He also presents the SSS congruence postulate/criterion and its justification.
Determine whether two triangles are congruent
By Khan Academy
Sal explains what it means for triangles to be congruent and what is a postulate/axiom. He also presents the SSS congruence postulate/criterion and its justification.
Congruent legs and base angles of isosceles triangles | Congruence | Geometry | Khan Academy
By Khan Academy
Showing that congruent legs imply equal base angles and vice versa. All Khan Academy content is available for free at www.khanacademy.org
Permutations | MathHelp.com
By MathHelp.com
This lesson covers congruent figures. Students learn that if two figures are congruent, then their corresponding parts are congruent. For example, if two triangles are congruent, then their corresponding angles are congruent, and their corresponding sides are congruent. Students are then asked to complete congruence statements using given figures.
Triangle Similarity - AA SSS SAS & AAA Postulates, Proving Similar Triangles, Two Column Proofs
By The Organic Chemistry Tutor
This geometry video tutorial provides a basic introduction into triangle similarity. it explains how to use two column proofs in order to prove if two triangles are similar using the mostly the AA postulates. Other triangle similarity postulates mentioned are the AAA, SSS, and SAS postulates. Theorems used in this video include the base angle theorem, theorems associated with parallel lines, alternate interior angle theorem, vertical angles, reflexive property, definition of an altitude, right angle congruence, and more. This geometry video contains plenty of examples and practice problems on triangle similarity.