[Composed by Mr. Quach for His Students]

GeoGebra Geometry | Geometry Book

## Do All of the Following Tasks

##### Task 1 Review Basic Terms in Geometry

- Read Appendix 1A below.
- It shows you how to explain basic concepts in Geometry using thumbnail definitions.

- Select the link Geometry Book at the top of this page.
- It gives you access to the Geometry book online.

##### Task 2 Take a Test

- Click here to bring up the test.
- Fill out the form, then press the Submit button to complete the test.
- When he sees your input data, Mr. Quach will give you a grade for this test.

##### Appendix 1A Thumbnail Definitions for Geometry

**Circle**; that means,*the same distance to a center*. | Page 6**Line segment**; that means,*all points between two*. | Page 6**Parallel**; that means,*two non-intersecting lines*. | Page 12- Parallel lines by drawing two perpendicular lines | Page 40

**Perpendicular bisector**; that means,*a perpendicular line through the midpoint*| Page 18**Conjecture**; that means,*a tentative basis without proof*. | Page 18**Inscribed hexagon**; that means,*every vertex on the circle*. | Page 24**Bisecting**; that means,*dividing into two parts*.**Angle bisector**; that means,*an angle bisecting line*. | Page 32**Congruent**; that means,*identical in form*.**Congruent segments**; that means,*line segments of equal length*. | Page 49**Square**; that means,*four congruent segments*. | Page 49**Polygon**; that means,*a plane figure with at least three straight sides and angles*.**Equilateral**; that means,*all sides congruent*.**Equiangular**; that means,*all angles congruent*.**Regular polygon**; that means,*equilateral and equiangular*. | Page 49**Tessellation**; that means,*surface covering*. | Page 65- Assertion
**Rotation**; that means,*a center and a directed angle*.**Perpendicular**; that means,*at an angle of 90 degrees*.**Reflection**; that means,*the same perpendicular distance to a line*.**Rigid motion**; that means,*translation, rotation, or reflection*. | Page 73**Rigid transformation**; that means,| Page 73*rigid motions without changes in measurements*.- Theorem | Page 73
- Reflection across a line | Page 81
**Translation**; that means,*sliding without rotating*. | Page 90-91- Directed line segment | Page 90-91