Jasper Eng's answer to Justin Wong Zen Loong's Secondary 4 E Maths Singapore question.
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A) BC = EC (given)
AC = FC (given)
ACB = FCE (Vertically oppo angle)
By SAS Test, ABC congruent to FEC
B) from (a),
Angle CEF = angle CBA (by congruency)
Angle BED = 180 - angle CEF
= 180 - 28 (angle on a straight line)
= 152 deg //
AC = FC (given)
ACB = FCE (Vertically oppo angle)
By SAS Test, ABC congruent to FEC
B) from (a),
Angle CEF = angle CBA (by congruency)
Angle BED = 180 - angle CEF
= 180 - 28 (angle on a straight line)
= 152 deg //
Date Posted:
3 years ago
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