anltc geometry

3. Comparison of two quantities by division and may be written as r/s, r:s, or r to s.
5. The points at an end of a line segment.
6. The property of a polygon whose sides are all congruent.
9. The property of a polygon whose angles are all congruent.
10. A ray begins at a point and goes on forever in one direction.
12. Two equivalent linear equations that overlap when graphed.
15. The point of concurrency of the bisectors of the angles of a triangle.
17. sides Sides that have the same relative positions in geometric figures.
20. angles Two angles whose sum is 90 degrees.
21. A line segment whose endpoints are the midpoints of two sides of a triangle.
23. The point of concurrency of the perpendicular bisectors of the sides of a triangle.
25. Having the same size, shape and measure. Two figures are congruent if all of their corresponding measures are equal.
26. The point of concurrency of the altitudes of a triangle.
28. angle of a polygon An angle that forms a linear pair with one of the angles of the polygon.
29. Angles are created by two distinct rays that share a common endpoint (also known as a vertex). ∠ABC or ∠B denote angles with vertex B.

1. Traditionally thought of as having no length, width, or thickness, and often a dot is used to represent it.
2. An equation which states that two ratios are equal.
4. The point of concurrency of the medians of a triangle.
7. The point at which two or more lines intersect or cross.
8. Transformation that changes the size of a figure, but not the shape.
11. lines Two lines in a plane that cross each other. Unless two lines are coincidental, parallel, or skew, they will intersect at one point.
13. bisector A perpendicular line or segment that passes through the midpoint of a segment.
14. Traditionally thought of as going on forever in all directions (in two-dimensions) and is flat (i.e., it has no thickness).
16. One of the basic undefined terms of geometry. Traditionally thought of as a set of points that has no thickness but its length goes on forever in two opposite directions.
18. A bisector divides a segment or angle into two equal parts.
19. of a triangle A segment is a median of a triangle if and only if its endpoints are a vertex of the triangle and the midpoint of the side opposite of a triangle.
22. lines Two lines are parallel if they lie in the same plane and they do not intersect.
24. polygon A polygon is inscribed in a circle if and only if each of its vertices lie on the circle.
27. pair Adjacent, supplementary angles. Excluding their common side, a linear pair forms a straight line.