Answer:
3 cm
Step-by-step explanation:
Answer:
x = -4
Step-by-step explanation:
-3x+y-=5
-3x+-7 =5+7
-3x = 12
x = -4
LCD is 12.
12 goes into 12 once. 12x1=12
12 goes into 60 five times. 12x5=60
To find the interior angle of any regular polygon you can use the formula

where n is the number of sides
So,

The measure of an interior angle in a regular octagon is 135
By most definitions, if the bases are congruent, it is not a trapezoid, it is a parallelogram.