The concepts of perfect and nonperfect squares appeared in many ancient texts. complete the sentences to identify the perfect and nonperfect squares. is a perfect square. is a nonperfect square.

A Perfect Square number from a number system is a number which can be expressed as the square of some number from same number system.

Or A perfect square no is a no. whose square root is possible and belong to same number system.

Number ending with 1 , 2 , 3 , 7 , 8 can never be a perfect square no.

Some examples of Perfect Square No.

16 = (4)² = (-4)²

625 = (25)² = (-25)²

10000 = (100)² = (-100)²

1.21 = (1.1)² = (-1.1)²

Non Perfect Square Number is a number which can not be expressed as the square of some number.

Number ending with 1 , 2 , 3 , 7 , 8 are always a non perfect square no.

Some examples of Non Perfect Square No.

5 , 17 , 12 , 6 , 235 , 1.235 ,

If m<COD = 95 degrees, that makes m<AOB a vertical angle to m<COD. That means that you subtract 180 - 95 and you get 85 degrees.

m<AOB = 85 degrees.

My problem with the wording of this problem is that it states that chords AC and BD are perpendicular. That would make both m<COD and m<AOB equal to 90 degrees. But I answered the problem based on your statement that m<COD = 95.