##### Across

**2.**Ten sided shape.**5.**In a rectangle, diagonals are _____.**7.**_____ angles are side by side.**9.**Perimeter of a circle.**10.**A many sided shape with straight edges.**11.**An angle that is 360° is known as a revolution, or _____.**14.**How many lines of symmetry does an equilateral triangle have?**15.**In an _____ triangle, all ides are equal.**16.**Co-interior angles are _____**21.**An _____ triangle has one axis of symmetry.**23.**A _____ is where two or more edges meet.**24.**_____ angles are between 180° and 360°.

##### Down

**1.**A five sided shape.**3.**Angle sum of a _____ is 180°.**4.**A _____ polygon has all sides equal in length and angles equal in size.**6.**A line that starts at a point but continues with no end.**8.**A straight line that cuts through two or more parallel lines.**9.**Angles that add up to 90°.**12.**A rectangle has equal _____ that bisect each other.**13.**A shape with two unequal parallel sides.**17.**An _____ angle of a triangle is formed when one side is extended.**18.**Opposite sides of a _____ are parallel, and opposite angles are equal.**19.**A line that divides an angle in half.**20.**A shape with two pairs of equal adjacent angles.**22.**An acute-angles triangle has all angles _____ than 90°.**25.**True or false: a rectangle is a rhombus.