So I know some of them but not all them sorry
5. If m<5=70 then m<6= 20
Why? Because there is a 90 degree angle there and if m<5 is 70 all you have to do to get m<6 is subtract 70 from 90 and you get 20 degrees
6. If m<5=70 then m<1= 90 and m<4=90
Why? Because you can see based on the drawing that they form right angles
4a. FGK is right angles
4b. The measure of FGK is 90 in total
Why? It has the right angle
Hope this helps:) this was all I could remember
