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**8.**An arc whose endpoints lie on the endpoints of the diameter, | The measure of this arc is 180 degrees.**10.**Argument using logic to prove conclusion as true | 'Given' is a word commonly used for this.**11.**The distance along a circular arc measured in linear units. | This is found by the formula named after this concept.**14.**Nonadjacent angle formed by two intersecting lines | This is called a kissing angle, too.**16.**This is formed by swapping the hypothesis and conclusion. | The opposite of something.**18.**Lines that do not intersect | Segment R is congruent to segment S.**20.**Its endpoints are on a circle and at its center at the halfway point. | This is half of the diameter.**22.**Two angles whose sum is 90 degrees. | 45 and 45 are _____________ ______.**25.**Segment whose endpoints lie on a circle | Makes up the inscribed angle.**27.**Changes position of figure but not other properties. | Translations are this.**29.**A triangle in which has two equal sides. | Is almost like an equilateral triangle, but not quite.**30.**An angle whose vertex is on a circle | Angle whose sides contain chords of the circle.

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**1.**An angle formed by one side of a polygon and the extension of an adjacent side. | Is complimentary with adjacent angle.**2.**Motions, Size or shape changes as it moves position. | Dilation is this type of motion.**3.**An angle of a triangle that is formed by the legs of a triangle. | This is the angle between the two other angles of a triangle.**4.**A triangle whose sides are all equal. | Is almost like an isosceles triangle but one thing about this shape differs.**5.**Sentence made based upon a figure | D is the midpoint of segment BC.**6.**Two angles whose sum is 180 degrees. | 60 and 120 are _____________ ______.**7.**An angle formed by two sides that share a common vertex. | Any of the angles of a triangle can be this.**9.**An arc whose points are on or in the interior of a corresponding interior angle. | The measure of this arc is equal to the measure of the central angle.**12.**Maps points onto other points of a plane | Rigid and non-rigid motions are this.**13.**This supports and proves statements. | An example of this is, 'Definition of midpoint.'**15.**Its endpoints lie on the circle at the halfway point. | This is twice the radius.**17.**A triangle that has three congruent angles. | The angles of this triangle are all 60***19.**An arc whose endpoints are on the exterior of a corresponding central angle. | The measure of this arc is equal to 360 degrees minus the central angle.**21.**Statement that is being proved is assumed to be false | This is not true because _____.**23.**A line that intersects a circle at exactly one point. | The point of tangency is where this and a circle intersect.**24.**An angle less than 180 degrees. | This angle's vertex lies at the center of a circle.**26.**Having the same size and shape. | Can be used to define two different line segments.**28.**This has two points that lie on a circle with all points in between. | The unbroken part of a circle.