##### Across

**3.**A _____ is a proven statement used for proving another statement**6.**Two lines that do not meet**7.**Any integer that is greater than one and is not a prime number**9.**Method of substituting one variable to solve the other**11.**Least Common Multiple**13.**Method of eliminating one of the variables**14.**Two lines that lie on top of one another**15.**Any number that cannot be written in the p/q form**19.**The sum of its positive divisor excluding the number itself is known as ______ number**20.**A statement that has been proven

##### Down

**1.**Procedure or formula for solving a problem**2.**Any number that can be written in p/q form**4.**A decimal number that has digits that do not go on**5.**A curve formed by all points**8.**An ________ is an equality containing one or more variable**10.**Tow or more lines that meet at a point**12.**A natural number greater than one that has no divisor other than one itself**16.**A set of whole numbers**17.**A polynomial of degree 1**18.**Highest Common Factor