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Key things to remember today


We are going to need to remember that a Full angle is 360º. 

All angles that make up a circle will add up to 360º.


Lets look at the following problem.


We need to find the value of e.


First we need to remember how many degrees are in a circle. How many are there?


Good 360º.


Next step - we need to know what the angles that we know add up to.


So we know the 2 angles are 146º and 117º. So lets add them together. 

Remember to use the column method to help you.


146 + 117 =  263.




Final step - to work out the value of e we now need to take 263º away from the 360º we know are in the full circle to work out the missing value.


360 - 263 = 97


This must mean then that the value of e is 97º.


Your turn

Home learners please could you take a photo of your answered questions and email it to Mr Hindman on Purple Mash.