29 percent = 29/100
So 29/100 x 20
= 5.8
The question is too general....but it could be acute, obtuse
Answer:
y = 90
Step-by-step explanation:
Since, e || f and a || b
Therefore, quadrilateral so formed is a rectangle.
Each angle of a rectangle is right angle.

The numbers are 18 and 12
690 because 86 is rounded up to 90