The interior angle of a regular polygon is $$\(150^{\circ}\)$$. Find the number of sides of this polygon. .............................................
Exam No：0580_s25_qp_21 Year：2025 Question No：5
Answer:
12
Knowledge points:
C2.2.3 Expand products of algebraic expressions. (Two brackets only, e.g. expand (x + 4)(x – 7))
Solution:
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