Similar Triangles

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This math video tutorial discusses similar triangles and how to use proportions to find the missing side and solve for x. This video contains plenty of examples and practice problems.

Polygons:

Quadrilaterals:


Skew Lines:


Points, Lines, Planes, & Segments:


Triangles - Basic Introduction:


Number of a Diagonals In a Polygon:


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Ratios and Proportions - Means Extreme:


Similar Triangles:


Similar Triangles - Enlargement Ratios:


Triangle Similarity - SSS, SAS, & AAA:


Triangle Proportionality Theorem:


Altitude on Hypotenuse Theorem:


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Pythagorean Theorem:


The Distance Formula:


Distance Between 2 Points - 3D:


Final Exams and Video Playlists:


Full-Length Videos and Worksheets: