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Friday, July 21 2017 @ 09:36 PM CDT
 Forum Index >  Test Paper Related >  Primary 6 Matters
 Angles in Geometric Figures
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By: Rohana (offline)  Monday, January 07 2013 @ 03:26 AM CST (Read 730 times)  
Rohana

Hi, can anyone help me to solve the maths question attached.

Thankyou in advance.

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By: echeewh (offline)  Wednesday, January 09 2013 @ 03:51 AM CST  
echeewh

Hey Rohana,

Following pls find my worked solution :

Angle CDE = 78° = Angle BAD {corresponding angle}
Angle DCE = (180 - 78) ÷ 2 = 51°
Angle x = 180 - 51 = 129°

Referring to 4-sided figure FBAD {sum of interior angles = 360°},

Angle BAD = 360 - 78 = 282°
Angle ADF = 180 - 150 = 30°
Angle y = 360 - 282 - 30 - 36 = 12°

===========

Trust this helps..

Do let me know again if there's any clarification.

Cheers,
Edward.

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