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Unit 4B Vocabulary

Name:____________________________________
Date: _______________ Period: _______________
DUE BY MONDAY DECEMBER 10th - 1 DAILY GRADE
Across
(not in book) 'Congruent' means same size, same _____.
(p. 353) A(n) ________ of a triangle is a perpendicular segment from a vertex to the line containing the opposite side.
(p. 155) When two lines intersect, the angles that are opposite each other are _________ angles.
(not in book) The slope of a vertical line is __________ and it's equation is in the form "x = c," where 'c' is the x-intercept.
(p. 537) If figures are similar, the side lengths are ____________ and the angle measures are equal.
(p. 193) The slope of a line in a coordinate plane is the _____ of the rise to the run.
(p. 72) The _____________ bisector of a line segment is a line ______________ to the segment at the segment's midpoint.
(not in book) If triangles are similar, they are the same shape but different _____.
(p. 364) Triangle Midsegment Theorem: The segment joining the ________ of two sides of a triangle is parallel to the third side, and its length is half the length of that side.
(p. 546) If ___ angles of one triangle are congruent to ___ angles of another triangle, then the two triangles are similar.
(p. 329) perpendicular bisectors, angle bisectors, medians, altitudes, and medians are all examples of special ________ in triangles
(p. 361) The __________ of a triangle is a line segment that connects the midpoints of two sides of the triangle.
(p. 11) The Midpoint _______: The midpoint M of AB with endpoints A(x1, y1) and B(x2, y2) is given by M[(x1+x2)/2, (y1+y2)/2].
(p. 194) Parallel lines have _____ slopes.
(not in book) A postulate is assumed to be true, while a(n) _______ is proven true.
(p. 163) __________ interior angles are nonadjacent angles that lie on opposite sides of the transversal between the intersected lines.
(p. 163) Corresponding ______ lie on the same side of the transversal and on the same side of the intersected lines.
(p. 515) A(n) _________ is a transformation that can change the size of a polygon but leaves the shape unchanged.
Down
(p. 18) An angle _________ is a ray that divides an angle into two angles that both have the same measure.
(p. 193) The _____ m is equal to (y2 - y1)/(x2 - x1). This is the ______ formula.
(not in book) The slope-__________ form of an equation is "y = mx + b," where 'm' is your slope and 'b' is your y-__________.
(p. 539) Corresponding angles of similar figures are _________.
(p. 195) Perpendicular lines have slopes that are opposite ___________, which means that the product of the slopes will be -1.
(p. 329) Module 8: _______ Segments in Triangles
(p. 549) If two sides of one triangle are proportional to the corresponding sides of another triangle and their _________ angles are congruent, then the triangles are similar.
(p. 539) _____________ sides of similar figures are proportional.
(not in book) A theorem is proven true, while a(n) _________ is assumed to be true.
(p. 349) A(n) _______ of a triangle is a segment whose endpoints are a vertex of a triangle and the midpoint of the opposite side.
(p. 549) If the _____ sides of one triangle are proportional to the corresponding sides of another triangle, then the triangles are similar.
(p. 8) The _________ Formula: The ________ between two points (x1, y1) and (x2, y2) on the coordinate plane is √[(x2 - x1)^2 + (y2 - y1)^2].
(not in book) The slope of a(n) __________ line is zero and it's equations are always in the form "y = b," where 'b' is your y-intercept.
(p. 525) Two plane figures are _______ if and only if one figure can be mapped to the other through one or more similarity transformations.
(p. 291) The ___ of the angle measures of a triangle is 180°.
(p. 16) The common endpoint is the ______ of the angle.