Isn’t it because of dilation?
You can identify similar polygon by comparing their corresponding angles and sides. ( if they are the same the ratio of the lengths is the scale factor. Also check if their sides are proportional.)
it is 65 complementary angles add up to 90
if you need more help let me know :)
Answer:
The last answer is right
Step-by-step explanation:
Because zs cuts the shape in half