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Unit 5 Relationships in Triangles

Vocabulary Crossword

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1.The point of intersection of the lines containing the altitudes of a triangle.
3.A ____ of a triangle is the segment that joins the midpoints of two sides of the triangle
4.A circle is ___ about a polygon if the vertices of the polygon are on the circle.
7.A polygon is ____ in a circle if the vertices of the polygon are on the circle.
8.In this type of proof a figure is drawn on a coordinate plane and the formulas for slope, midpoint, and distance are used to prove properties of the figure.
13.Statements with the same truth value are ___
14.The point of intersection of the medians of a triangle.
2.A conditional and its ___ always have the same truth value.
4.The point of concurrency of the perpendicular bisectors of the sides of a triangle.
5.____ lines are three or more lines that meet in one point.
6.This type of proof involves the use of indirect reasoning.
9.The point of concurrency of the angle bisectors of a triangle.
10.A(n) ___ of a triangle is a perpendicular segment from a vertex to the line containing the side opposite the vertex.
11.The ___ of a statement has the opposite meaning of the original statement.
12.A (n) ___ of a triangle is a segment whose endpoints are a vertex and the midpoint of the side oppsite the vertex.

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