geometry vocab

4. each of the pairs of opposite angles made by two intersecting lines. Vertical is similar to the vertex of two triangles
7. straight lines passing through to create an endpoint. It is 2 or more lines.
9. part of a line consisting of two endpoints and all points in between. It is written like EF, AD, RK, QR etc.
11. slides an object from a fixed distance or direction. It is also an isometric transformation that maps every point to an image.
12. the ratio between corresponding measurements of an object and a representation of that object. If the scale factor is a whole number, the copy will be larger.
13. value of something compared to another thing. A example is one apple to one orange, 1:1
14. a polygon which is inscribed in a shape. It can be especially a cyclic polygon, which is inscribed in a circle and a midpoint polygon of another polygon.
16. two points that form and line with no thickness or width. Some say it is a dot that went for a walk.
18. intersecting system of lines. It is what the alternate, corresponding and consecutive angles lie on.
20. two figures are said to. be similar. if they are the same shape. More specifically if they are congruent triangles.
21. a location of the graph. It has no shape or size.
22. a flat surface made up of points.It would be three or more points.
23. angles formed when two lines intersect. They are linear if they a formed by two intersecting lines.

1. two angles sum is 180 degrees.For example one angle is 150 degrees and the other is 30 degrees.
2. Angles formed when two parallel or non-parallel lines are intersected by a transversal. The angles are positioned at the inner corners of the intersections and lie on opposite sides of the transversal angle.
3. having all its sides the same length. This would be a triangle and it could be congruent.
5. A reflection is a transformation representing a flip of a figure. When reflecting a figure in a line or in a point, the image is congruent to the pre image.
6. when the shape changes in size. An example is when a triangle gets really small and compresses.
8. of something into two equal or congruent parts, usually by a line. This line is then called a bisector.
10. pair of angles that lie on the outer side of the two parallel lines. But on either side of the transversal line.
15. an isometric transformation that maps every point to an image. A example is point P to point P' and it is reflected off of a y or x axis.
17. two ratios that are set equal to each other. Usually the ratios in proportions are written in fraction form
19. isometric transformation that also maps every point to an image. It turns a figure about a fixed point which is called center of rotation.