Maths
19.11.20
Well done yesterday. Most of us were successful.
Lets Recap
If we have a right angle and we know part of the angle it will always be 90º subtract the º of the angle we know.
e.g.
This is a right angle so it will be 90º and the angle we know is 62º. Therefore, to work out the missing angle we will subtract 62º from 90º
90º - 62º = 28º
Next
If we have a straight angle and we know part of the angle then it will be 180º subtract the º of the angle we know.
e.g.
This is a straight angle so it will be 180º and the angle we know is 77º. Therefore, to work out the missing angle we will subtract 77º from 180º
180º - 77º = 103º
Starter
Work out the following:
Main
Today we are going to look at missing angles within a full angle.
How many º are there in a full angle?
To work or a missing angle we will need to subtract the angle we know from 360º
Lets looks at an example:
This is a full angle so it will be 360º and the angle we know is 225º. Therefore, to work out the missing angle we will subtract 225º from 360º
360º - 225º = 145º
Task
Challenge
What is the value of angle x?
Home learners please could you take a photo of your answered questions and email it to Mr Hindman on Purple Mash.