Premium Only Content

Cyclic quadrilaterals (= inscribed quadrilaterals) | plane geometry | elementary level
Episode 50.
Cyclic quadrilaterals (= inscribed quadrilaterals) | plane geometry | elementary level.
Branch of mathematics: plane geometry.
Difficulty level: elementary.
Definition. A quadrilateral is said to be cyclic (or inscribed) there exists a circle that passes through all 4 of its vertices.
Theorem. A quadrilateral is cyclic if and only if the sum of its opposite angles is equal to $180^{\circ}$.
Theorem. A quadrilateral is cyclic if and only if one of its angles is equal to the opposite external angle.
Theorem. A quadrilateral $ABCD$ is cyclic if and only if $\angle{ABD}=\angle{ACD}$.
Mathematics. Geometry. Plane geometry.
#Mathematics #Geometry #PlaneGeometry
The same video on YouTube:
https://youtu.be/ovWv1XNb6Bo
The same video on Telegram:
https://t.me/mathematical_bunker/74
-
8:10
MattMorseTV
4 hours ago $0.39 earnedThey just CAVED.
81511 -
14:55
Tundra Tactical
4 hours agoTundra's EXPLOSIVE SIG Meme Review
194 -
LIVE
Joker Effect
1 hour agoThe told me to go to H3LL...... well... I am here and causing chaos now. HORROR GAMEPLAY ONLY! :)
433 watching -
LIVE
Mally_Mouse
3 hours agoLet's Hang!! --10K Follower Celebration!!!
62 watching -
1:01:13
BonginoReport
3 hours agoEpstein’s ‘Madam’ Maxwell Meets With the DOJ - Nightly Scroll w/ Hayley Caronia (Ep.97)
30.8K24 -
LIVE
The Jimmy Dore Show
2 hours agoBrigitte Macron Names Jimmy in Suit Against Candace Owens! Fox News Pushes PURE Israeli Propaganda!
10,179 watching -
6:31
Mrgunsngear
5 hours ago $0.37 earnedBreaking: Democrats Attempt To Raise NFA Tax To $4,709!
2.36K13 -
47:21
The Dr. Ardis Show
9 hours ago $2.32 earnedThe Dr. Ardis Show | Zero Accountability with Dr Sherri Tenpenny | Episode 07.24.2025
3.07K9 -
1:50:08
Redacted News
4 hours agoBREAKING! It's starting! DOJ Strike Force Going After Obama / Hillary Criminal Cabal | Redacted
197K75 -
36:41
Stephen Gardner
3 hours ago🔥BREAKING: Trump-Epstein Saga Gets CRAZIER—Must-See New Evidence Revealed!
30.3K39