2.4 Proportional Lengths

by Jason Appel

| 23 QuestionsBy the end of this playlist I can...

-recognize when segments are divided proportionally

-recognize and apply the following theorems:

1. If a line parallel to one side of a triangle intersects the other two sides, then it divides those sides proportionally.

2. If 3 parallel lines intersect 2 transversals, then they divide the transversals proportionally.

3. If a ray bisects an angle of a triangle, then it divides the opposite side into segments proportional to the other two sides.

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I've completed the video or mini-lesson on proportional lengths and feel confident that I understand the concept.

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I've completed the video or mini-lesson on triangle proportionality and feel confident that I understand the concept.

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False

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Try a few of these practice problems on finding missing lengths in similar triangles. Move on when ready.

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I've completed the Khan Academy practice problems on finding missing lengths in similar triangles.

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I've completed the video or mini-lesson on 3 parallel lines intersected by 2 transversals and feel confident that I understand the concept.

True

False

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I've completed the video or mini-lesson on the triangle angle-bisector theorem and feel confident that I understand the concept.

True

False

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