Circle Theorem - WAEC 2021 Q13b

#2022WAEC #Bearing #SOHCAHTOA #WAEC #Maths #SHSMaths
From the 2021 WAEC Mathematics Theory Paper, join us as we solve this question on Circle Theorem featuring Isosceles Triangle and Angles in the same Segment.
You will learn how to:
correctly interpret questions on Theorem
represent angles and geometric lengths on a diagram
use circle theorems to solve problems
use properties of triangles to solve problem
solve problems on circle theorems
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[@BILQISOBASA-ALADE-ry5wx]

Great🎉🎉🎉

[@saraasare699]

Great 👍

[@yungarins6962]

There was a small mistake. angle BCD is equal to 115 and not 90 because you must add 25 and 90 to get angle bcd. One you get bcd as 115. To get angle bad all you have to do is 180-115= 65

[@DavetutsAcademy]

Well noted, but there wasn't any mistake there. Even though your approach is perfectly correct, too. Circle theorems can always be solved by different approaches and this is a classical example of such.
BCD and BAD are opposite angles of a cyclic quadrilateral and they sum up to be 180. So your approach is cool.