“Math, Revealed,” our four-part series exploring the mathematics behind everyday objects and experiences, recently came to a smashing conclusion. One installment took a spin through “taxicab geometry,” a wacky but vital corner of mathematics in which circles aren’t round and pi equals 4. Another journey began with apples and pentagrams and led to Leonardo da Vinci, the golden ratio and ideal positioning of belly buttons.

We had great fun on this adventure and hope to resume it before too long. In the meantime, here’s a quiz to test what you learned and your general math knowledge. Enjoy!

Questions and answers 1 through 8: photo illustrations by Jens Mortensen for The New York Times; answer 6: photo by Brendan Hoffman for The New York Times; question 9: photo illustration by The New York Times, source photo via Alamy; question 10: photo illustration by The New York Times, source photos by Balarama Heller for The New York Times.

Produced by Alan Burdick, Alice Fang, Marcelle Hopkins and Matt McCann.