Big Ideas Math Geometry Texas
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4. Proportionality Theorems
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Exercise 3 Page 449

Use your conclusions from the exploration.

See solution.

Practice makes perfect

From the exploration, we can conclude that, in a triangle intersected by an angle bisector, sides are proportional to the segments made by the bisector on the opposite side.

As we found out in the exploration, if we have a triangle intersected by a line parallel to one side, then this line divides the other two sides proportionally.