Answer:
40
Step-by-step explanation:
angle CHA is equal to angle HGB because they are alternate interior angles.
This means that angles CHA and AGH are supplementary, add up to 180 degrees.
So, 5x + x + 12 =180
6x = 168
x = 28
<CHG = x + 12 = 28 + 12 = 40
2.3 rounds to 2
because if the decimal is 5 or above you round up, if its less than 5 it stays the same. for example 2.6 round to 3 but 2.4 becomes 2
312
___
1000
Since it reads 0 and 312 thousandths, you would simply place 1000 as the denominator. if it reads hundredths, put 100 as the denominator. if it reads tenths, put 10 as the denominator.
The lines mean that they are congruent! so the perimeter is 25*4 = 100
