##### Across

**4.**the point of intersection of all the three medians of triangle**7.**who's volume is l*b*h**8.**a line which intersects two or more lines at distinct points**9.**When none of the sides of a triangle are equal**10.**part of a line with one end point**12.**a six-sided polygon**13.**angle that is less than 90⁰**15.**when the sum of two angles is equal to 90 degree**16.**the average of the given numbers

##### Down

**1.**a triangle in which all three sides have the same length**2.**number staring from 1 is called**3.**half of diameter**5.**perimeter of a circle is called**6.**the opposite sides are parallel and equal to each other and all four angles are right angles**11.**lines that never meet**14.**a number that can be represented as the quotient p/q of two integers such that q ≠ 0