 ## Question

Secondary 1 | Maths

Anyone can contribute an answer, even non-tutors.

##### Anonymous

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Hi, would appreciate assistance on this question. Thank you.

Date Posted: 1 year ago
Views: 62
Eric Nicholas K
1 year ago
You can draw another line that is parallel to the two lines and hit the 75 degree point
Sunita
1 year ago
Hi, my son is asking what rule is being used here. He says he needs to state the rule used. Are you able to assist? Thanks
Eric Nicholas K
1 year ago
Following the other tutor’s workings, you will need the following line of reasonings:

1. Sum of angles in a triangle is 180 degrees
2. Sum of angles on one side of a straight line is 180 degrees
3. Corresponding angles are equal
4. Interior angles of parallel lines add to 180 degrees
Eric Nicholas K
1 year ago
The part that the other tutor wrote 159 degrees twice is called corresponding angles. There is also alternate angles which is not the same, but related.
Sunita
1 year ago
Thank you so much 