Answer:
Option 3) x = 10
Step-by-step explanation:
Since each of it's angle has a measure of 90 degrees, So,
=> 10x-10 = 90
=> 10x = 90+10
=> 10x = 100
Dividing both sides by 10
=> x = 10
Make an equation to solve for x.
10x=90+10
Then solve.
10x=100
x=10
So the answer is x=10.
