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# Geometry Problem 1307

### Triangle, Incenter, Parallel line, Sides, Measurement

The figure below shows a triangle ABC with the
incenter I and sides a, b, and c. Line MIN is
parallel to AC.

Prove that MN =b*(a+c)/(a+b+c).

Geometry Problems

1301-1310

Visual Index

Open Problems

All Problems

Triangle

Incenter

Angle Bisector

Parallel lines

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### Problem 1305 in Motion using Mobile Apps, iPad

Click on the figure below.