This is how we find two measurements. Firstly we need to find out how many degrees the whole shape is. Similar to finding out one section, but if you have a right angle in the shape then it is 90° so you know one section now. Example:
If you have 90° and 49° then you need to add them two up which makes 139° then you do 360°-139°=221°, then you have the answer.
On Wednesday we had to draw given angles. We had to use a protractor this is how you use a protractor.
Firstly you need line up the middle of the protractor on to the point of the angle but if the angle is on the right side then you use the left side of the protractor but if the angle is on the left then you use the right side of the protractor. Then you would line up where the end of the angle is then you will get the answer.
S.A and L.P