The measure of x in both parts is: 120°
Step-by-step explanation:
Part A:
We can clearly see that the figure in part a has six equal sides. So the given figure is a hexagon.
A hexagon has six equal sides in six equal interior angles.
Sum of interior angles of hexagon is 720°
So,

Part B:
The figure is a Dodecagon with 12 sides.
The Dodecagon has 12 equal sides and angles.
The sum of internal angles of Dodecagon is 1440°
So,

The measure of x in both parts is: 120°
Keywords: Polygons, Hexagon
Learn more about polygons at:
#LearnwithBrainly
Parallel means lines that never meet, and perpendicular are lines that meet at right angles.
Answer:
7218°C
Step-by-step explanation:
difference between the two numbers 7000 and -218 is
7000-(-218) = 7000+218 = 7218
(NOTE: <em>When conditions like this arise, when two minus (-) sign come together, replace the two minus with a plus sign and open the brackets. When two plus sign occurs together, do not replace it with a minus sign, just replace with a single plus sign</em>)