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Half a Triangle
Age
14 to 16
Challenge Level
Problem
Getting Started
Student Solutions
Teachers' Resources
This problem will need solving in stages by most students.
Perhaps beginning by establishing the required line ratio.
Then by remembering a familiar figure where that particular ratio can be found.
Deciding how that figure can be constructed on the given triangle to locate a useful point.
Finally creating the required line, parallel to the base, across the triangle.