The theorem is illustrated below.
is the midpoint of
The proof is quite simple. Draw radii to complete the triangles
and
These triangles have a side in common (
) and
Then from Pythagoras Theorem for triangle
and for triangle
The theorem is illustrated below.is the midpoint of
The proof is quite simple. Draw radii to complete the trianglesandThese triangles have a side in common () and
Then from Pythagoras Theorem for triangleand for triangle