Answer:
Step-by-step explanation:
Let's rewrite 1 as 1 ^3.
Now, we can apply the "Difference of Cubes Formula".
<u>_____________________</u>
B - each vertex of the quadrilateral lies on the circumference of the circle
An obtuse angle is an angle between 90*-180*
The sum of the measures interior angles is (n-2)*180 which is equal to 540.