##### Across

**3.**middle point within a circle**4.**geometric tool used to draw circles and parts of circles**7.**triangle with no congruent sides**9.**parallelogram with congruent sides**10.**an example for which the conjecture is incorrect**14.**rise over run**15.**lines that intersect to form right angles**18.**same shape, different size**20.**two angles whose measures have sum of 180**21.**any quantity with magnitude and direction**22.**reasoning based on logic**24.**angles whose sides are opposite rays (measures are congruent)**25.**quadrilateral with one pair of parallel sides**28.**angle whose vertex is the center of a circle or regular polygon**29.**distance from the center to a vertex of a regular polygon**30.**angles with a common side and vertex**31.**a segment that joins two midpoints**32.**"flip"**33.**theorem used to find missing lengths in right triangles**35.**non-coplanar lines that do not intersect**36.**parallelogram with congruent sides, all angles are 90 degrees**37.**"turn"**38.**quadrilateral with no parallel sides**41.**a trigonometry ratio that works because the slope of any angle does not change

##### Down

**1.**a series of infinite points**2.**perpendicular distance from the center to a side of a regular polygon**5.**part of a line with two endpoints**6.**coplanar lines or planes that do not intersect**7.**a trigonometry ratio that works because the ratio between the rise and the hypotenuse for any angle does not change**8.**a trigonometry ratio that works because the ratio between the run and the hypotenuse for any angle does not change**9.**parallelogram with congruent diagonals**10.**two angles whose measures have sum of 90**11.**quadrilateral with two pairs of parallel sides**12.**a line, ray, or segment that intersects an angle, line or segment at the midpoint**13.**formed by two rays with the same endpoint**16.**angle whose measure is 90 degrees**17.**trapezoid or triangle with at least two congruent sides**19.**a point that divides a segment into two congruent segments**20.**ruler with no markings**23.**"slide"; maps all points of a figure the same distance in the same direction**26.**reasoning based on patterns**27.**a closed plane figure with at least 3 sides**28.**equal**31.**a segment whose endpoints are a vertex and the midpoint of the opposite side**34.**a perpendicular segment from a vertex to the line containing the opposite side**39.**a location**40.**a part of a line that extends in one direction