Answer:
True.
Step-by-step explanation:
These angles are congruent because lines DE and BC are parallel.
X=2
x=15
4x+1=9
-1 -1
4x=8
4/4x=8/4=2
x/5-1=2
+1 +1
x/5=3
(5) (5)
x=15
Answer:
D) 15
Step-by-step explanation:
The sum of the interior angles of a polygon is given by

We have that, the sum of the interior angles of a polygon is
26 right angles. We want to find n, the number of sides.
We substitute into the formula to get:

Divide through by 90

Divide through by 2


