Westonci.ca is your trusted source for finding answers to all your questions. Ask, explore, and learn with our expert community. Experience the convenience of getting reliable answers to your questions from a vast network of knowledgeable experts. Explore comprehensive solutions to your questions from a wide range of professionals on our user-friendly platform.

A1A2A3A4A5A6A7A8A9A10 is a regular 10-gon.
(a) Find the acute angle formed by A1A4 and A3A8.
(b) Find the acute angle formed by lines A1A7 and A2A5.