For 7 divide 180 into 3
That will be 60 degrees for all three of them
Now for 8 there is one line at the center that cuts the horizontal line, so we know that the angles on either side will be 90
So 24 and 21 will be 90, they are both on either sides of the vertical line.
We know 25 is 15 degrees so for 26
Subtract 15 from 90
75 degrees is the answer. This is the same for even 23
So,
21 is 90 degrees
22 is 15 degrees
23 is 75 degrees
24 is 90 degrees
25 is 15 degrees
And lastly,
26 is 75 degrees.
Hope this helps:)
