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Euclid Book I PROP. XXXII. -- THEOREM.

Euclid Book I PROP. XXXII. -- THEOREM.

Wednesday, Jun 24, 2020

@ Mr. Eric

If any side (AB) of a triangle (ABC) be produced (to D), the external angle (CBD) is equal to the sum of the two internal non-adjacent angles (A, C), and the sum of the three internal angles is equal to two right angles.

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