# Find sufficient conditions in which the triangle \$ABC\$ is located inside the domain traced by the triangle \$DEF\$.

by China   Last Updated February 11, 2019 09:20 AM - source

Let us consider two triangles $$ABC$$ and $$DEF$$ in the plane.

My question is: Find sufficient conditions in which the triangle $$ABC$$ is located inside the domain traced by the triangle $$DEF$$.

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