TIEW KAI JIE NICHOLAS's answer to Akhil's Primary 5 Maths Angles & Geometry Singapore question.

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TIEW KAI JIE NICHOLAS
Tiew Kai Jie Nicholas's answer
107 answers (Tutor Details)
1st
Sum of all angles in a triangle is 180 which makes up 2 right angle.
Angle in a rectangle is 90