##### Across

**4.**, an angle of 90 degrees ; as in the corner of a square**5.**, the number below the line in a common fraction;a divisor**6.**, studies the shape,size,position and dimensions of things**9.**,a whole number that can be made by multiplying other whole numbers**11.**, usually expressed as a raised symbol beside the number or expression**15.**, a whole number that is not a faction**16.**, a number which produces a specified quantity when multiplied by itself**18.**, the action of adding something to something else

##### Down

**1.**,the process or skill of dividing one number by the other**2.**,the number above the line in a common fraction showing how many parts indicated by the denominator are taken**3.**,**7.**,a whole number greater than 1 whose only factors are 1 and itself**8.**,is made by adding the same value each time**10.**, a number that can be divided by another without a remainder**12.**, a ratio of when the second term is 100**13.**, the process or skill of taking one number or amount away from another**14.**,a whole number that can evenly be divided into another number**17.**, is equivalent to or is identically equal to