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P4 Math Olympiad

Question post on Tue, 18/09/2018 5:18pm

Help would be appreciated for this question

Source: AGPS

Owlinker · Answer 1 · Post on Wed, 19/09/2018 9:39am

Hope this answers your question.

Owlinker · Answer 2 · Post on Wed, 19/09/2018 9:39am

Owlinker

Post on Wed, 19/09/2018 9:39am

Hope this answers your question.

THW · Answer 3 · Post on Tue, 18/09/2018 10:24pm

The answer is (4) 64º

Opposite angles in a rhombus are the same.

∠ABC = ∠ADC = ∠FDE = 52º

Since DEF is an isosceles triangle, ∠DEF = (180º – 52º) ÷ 2 = 128º ÷ 2 = 64º