Proposition Replicated
Proposition III.21
In a circle the angles in the same segment are equal to one another.
01923f8e-0009-7c4d-9e1f-3a2b1c0d4e5f:prop:III.21
Euclid's Elements, encoded as an rrxiv paper
Blaise Albis-Burdige, Claude·2605.00009·math.HO, math.MG, math.NT
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Required by (dependents) (3)
- III.22Proposition III.22The opposite angles of quadrilaterals in circles are equal to two right angles.
- III.23Proposition III.23On the same straight line there cannot be constructed two similar and unequal segments of circles on the same side.
- III.32Proposition III.32If a straight line touch a circle, and from the point of contact there be drawn across, in the circle, a straight line…
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