This lecture discusses key ideas from the 18th century philosopher Immanuel Kant's work, The Prolegomena to Any Future Metaphysics. Specifically it focuses on his discussion of geometry in particular, in the course of which he briefly examines geometric proofs resting on congruence and objects that may be the same in some respects but are not congruent, such as spherical triangles, mirror images of hands, and helixes. Kant argues that geometry, based on the pure intuition of space as a form of sensible intuitions, applies to all of our possible experience of objects in space To support my ongoing work, go to my Patreon site - www.patreon.com/sadler If you'd like to make a direct contribution, you can do so here - www.paypal.me/ReasonIO - or at BuyMeACoffee - www.buymeacoffee.com/A4quYdWoM You can find over 3,000 philosophy videos in my main YouTube channel - www.youtube.com/user/gbisadler Purchase Kant's Prolegomena to Any Future Metaphysics - https://amzn.to/49pc1Xm