Justin Wong Zhi Yong's answer to Lynn Ling's Primary 5 Maths question.

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Justin Wong Zhi Yong
Justin Wong Zhi Yong's answer
12 answers (A Helpful Person)
Unknown angle= 180°-POU-ROT=POR
Ans=POR
Do upvote if you think i have properly answered your question. Thank you.