For the first one, I cannot see what it is, it's blurry. But angle J= angle L
and angle K will be 180- 2 times angle L
bcs it's isosceles?
For the second one, both angles C and E will be the same.
For the third one, can't tell what angles x and z's values are, but they look the same.
If two angle values are the same in a triangle, it's isosceles, so 180-(x+z) will get you your answer
For four, blurry. BUT IT'S ISOSCELES INNIT? (you can tell by the little lines on the sides that tell u they are the same) so the two values at the bottom are the same. Do 180 minus them both.
For five,
4x + 7 = 9x - 33
take away 7 from both sides
4x = 9x - 26
then take away 4x
0=5x-26
For question six, can't see.
For seven, ISOSCELES
so that tells you
9x - 73 = 3x + 23
add 73 to make -73 not minus anymore
9x = 3x + 96
the rest is simple algebra>:)
From the Uk.