Dear readers, Catholic Online was de-platformed by Shopify for our pro-life beliefs. They shut down our Catholic Online, Catholic Online School, Prayer Candles, and Catholic Online Learning Resources essential faith tools serving over 1.4 million students and millions of families worldwide. Our founders, now in their 70's, just gave their entire life savings to protect this mission. But fewer than 2% of readers donate. If everyone gave just $5, the cost of a coffee, we could rebuild stronger and keep Catholic education free for all. Stand with us in faith. Thank you. Help Now >
Thomas Ceva
FREE Catholic Classes
Mathematician, born at Milan, 21 December, 1648; died there, 23 February, 1737. In 1663 he entered the Society of Jesus. He was a prolific writer on a variety of subjects, especially mathematics and poetry. He is known today only for the theorem in geometry which bears his name. Ceva's Theorem is: three concurrent lines drawn through the vertices of a triangle divide the opposite sides so that the product of the three distance-ratios is equal to unity. Ceva published this important proposition in 1678. It is the dual of the theorem of Menelaus.
Join the Movement
When you sign up below, you don't just join an email list - you're joining an entire movement for Free world class Catholic education.
-
- Easter / Lent
- Ascension Day
- 7 Morning Prayers
- Mysteries of the Rosary
- Litany of the Bl. Virgin Mary
- Popular Saints
- Popular Prayers
- Female Saints
- Saint Feast Days by Month
- Stations of the Cross
- St. Francis of Assisi
- St. Michael the Archangel
- The Apostles' Creed
- Unfailing Prayer to St. Anthony
- Pray the Rosary
New $23 Million AI Academy Aims to Put Teachers in Control of Tech in the Classroom
California Rejects Federal Order on Transgender Athletes, Keeps Males in Girls’ Sports
Catholic Online AI Open Letter
Daily Catholic
- Daily Readings for Friday, July 11, 2025
- St. Benedict of Nursia: Saint of the Day for Friday, July 11, 2025
- Infant Jesus of Prague Novena Prayer: Prayer of the Day for Friday, July 11, 2025
- Daily Readings for Thursday, July 10, 2025
- Bl. Emmanuel Ruiz: Saint of the Day for Thursday, July 10, 2025
- Prayer to Our Lady of the Sacred Heart: Prayer of the Day for Thursday, July 10, 2025
Daily Readings for Friday, July 11, 2025
St. Benedict of Nursia: Saint of the Day for Friday, July 11, 2025
Infant Jesus of Prague Novena Prayer: Prayer of the Day for Friday, July 11, 2025
Bl. Emmanuel Ruiz: Saint of the Day for Thursday, July 10, 2025
Copyright 2025 Catholic Online. All materials contained on this site, whether written, audible or visual are the exclusive property of Catholic Online and are protected under U.S. and International copyright laws, © Copyright 2025 Catholic Online. Any unauthorized use, without prior written consent of Catholic Online is strictly forbidden and prohibited.
Catholic Online is a Project of Your Catholic Voice Foundation, a Not-for-Profit Corporation. Your Catholic Voice Foundation has been granted a recognition of tax exemption under Section 501(c)(3) of the Internal Revenue Code. Federal Tax Identification Number: 81-0596847. Your gift is tax-deductible as allowed by law.