##### Across

**3.**, Line connecting the vertex to the midpoint**8.**, Two angles whose sum is 180 degrees**9.**center of gravity or the balance point of a triangle**12.**of tangency , the point on intersection on a circle of a tangent line and the circle**13.**, all sides the same length**14.**, Part of a circle that equals 180 degrees**18.**, A line segment inside a circle whose endpoints are on the circle**20.**, Two angles whose sum is 90 degrees**23.**Opposite angles formed when two lines intersect**24.**, point that is equidistant from both ends of a line segment**25.**arc, Part of a circle that measures between 180 and 360 degrees

##### Down

**1.**, Quadrilateral with opposite sides parallel**2.**Line, A line that intersects a circle in two place**4.**Two triangles with all three sides congruent**5.**, Cuts into 2 equal parts**6.**, lines that meet at right angles**7.**, An angle whose measure is 90 degrees**10.**, angles on the same side of a transversal and inside the parallel**11.**Arc, Part of a circle that measures less than 180 degrees**15.**A triangle with at least two congruent sides**16.**All sides the same length**17.**Angle , An angle whose vertex is at the center of a circle**19.**, A chord that goes through the center of a circle**21.**, Segment that connects the midpoints of 2 sides of a triangle**22.**Line, A Line that touches a circle at only 1 point**23.**, Cavalierii's principle states that two-dimensional objects with the same cross sectional area will have the same ____