Question

please help

Answer 1

@OrangeMaster

Answer 2

ADD AND EQUATE TO 360 AND CALCULATE X

Answer 3

What RULE(S) DO WE USE HERE?

Answer 4

#1: Rules to Use:
TOTAL INTERIOR ANGLES OF A TRIANGLE = 180 degrees
TOTAL INTERIOR ANGLES OF A QUADILATERAL = 360 degrees

Answer 5

1.60+80+128+x=360
268+x=360
x=360-268=92

Answer 6

#2: Rule to Use:
TOTAL INTERIOR ANGLES OF A QUADILATERAL = 360 degrees

Answer 7

#3: Rule to Use:
TOTAL INTERIOR ANGLES OF A QUADILATERAL = 360 degrees

Answer 8

four sides always constitute a quadrilateral

Answer 9

three sides ,triangle
6 sides ,hexagon.
and so on.