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IKMC 2010 - Grades 11-12 - Paper 01 - Self-study Question 20

IKMC · IKMC 2010 - Grades 11-12 - Paper 01 - Self-study

Question 20

A paper strip is folded three times as shown. If $\alpha=70^\circ$, find $\beta$.

Question illustration
  1. $140^\circ$
  2. $130^\circ$
  3. $120^\circ$
  4. $110^\circ$
  5. $100^\circ$