This answer can be any real number, as both sides are equal to each other. Try inserting different numbers in here, and you should realize any of them would work
Two angles are said to be linear if they are adjacent angles formed by two intersecting lines. The measure of a straight angle is 180 degrees, so a linear pair of angles must add up to 180 degrees.
Answer:

Step-by-step explanation:
Perimeter of the pentagon = 20.5 cm
Length of 4 sides = 
Length of the other side = 2.1 cm
Perimeter of the pentagon will be

The value of
is
.
Answer:
4:14, 6:21, 8:28
Step-by-step explanation: