Answer:
62.5 degrees
Step-by-step explanation:
180-55= 125
125/2 = 62.5
This is not a polygon as it has a section (at the bottom) which is composed of non-straight segments.
Answer:
28201443
Step-by-step explanation:
hope this helps!
Answer:
x = 20
Step-by-step explanation:
I don't see a y in the diagram.
The 3 angles x, 90 and (4x - 10) lie on the line EF and sum to 180°, so
x + 90 + 4x - 10 = 180, that is
5x + 80 = 180 ( subtract 80 from both sides )
5x = 100 ( divide both sides by 5 )
x = 20
