AC Lim's answer to Gens's Primary 6 Maths Geometry Singapore question.

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AC Lim
Ac Lim's answer
13252 answers (A Helpful Person)
Total have 5 same angle in pentagon (5 sided figure which have all equal sides and angle).
Therefore divide 5.
Hope this helps.
J
J
5 years ago
Most intuitive method. Great job
AC Lim
AC Lim
5 years ago
Since the student mentioned ---> have not learn this yet, therefore have to introduce this(Triangle) method. (Angle each triangle = 180). So they no need to remember formula (n-2)x180.
Thanks J. Noticed you done lot of great job too (in other question). Learnt a lot from you too.
J
J
5 years ago
Yes this is the best for primary school, the formula is typically taught at secondary level only.

Am learning a lot from you as well, your solutions help me to see the question and solving approach in new perspectives. Kudos!