Mathematics
Grade9
Easy
Question
The quadrilateral is rotated about O. What is the value of x?
- 2
- 3
- 4
- 5
Hint:
first calculate y , and then substitute value of y and then calculate x .
The correct answer is: 2
Step 1 : Rotation is isometry.
finding y
2y = 6
y = 3
Step 2 : with help of y calculate x
5x = 3y + 1 (substitute y = 3)
Step 3 : solving for x
5x = 3(3) + 1
5x = 10
x = 2
so , x= 2 is the right answer .
Compare corresponding sides as they are equal .
