Check the length of all the sides and measures of angles.
Think of a name for such a length.
circles are round in shape/
Recall the definition of a altitude.
Take the median as x and then find the value of line segment in x and solve the equation.
Angle should be 90 degree.
Check the lines joining the vertices.
an altitude of a triangle is a line segment through a vertex and perpendicular to a line containing the base.
Triangle has three sides and three corners.
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