Cyclic Quadrilaterals (IAT: Corollary 3)

In this applet, students can readily discover this immediate consequence (or corollary) of the inscribed angle theorem: In any cyclic quadrilateral (quadrilateral inscribed inside a circle), opposite angles are supplementary.
View Activity View Activity

 

Tim Brzezinski —

 
Resource Type
Activity
Tags
angle  angles  ccss  ccss.hsg.c.a.3  common  common-core  core  corollary  cyclic  exploration  general-quadrilateral inscribed opposite quadrilateral supplementary theorem Show More…
Target Group (Age)
11 – 14
Language
English
 
 

Books

 
© 2026 International GeoGebra Institute