Elements I: Proposition 15
Euclid, [i]The Elements[/i], Book 1
Proposition XV: If two straight lines intersect in a point, vertical (opposite) angles are equal.
- Target Group (Age)
- 19+
- Language
- English (United States)
Error
A timeout occurred. Trying to re-save …
Sorry, but the server is not responding. Please wait a few minutes and then try to save again.
