# Basic Geometric Definitions (B2W1D2)

- Author:
- Judith Hilinski

- Topic:
- Geometry

**Study your B1W1 Vocabulary. It is very important to understand and use your Geometry Vocabulary. Use the core definitions on this worksheet and your B1W1 Vocabulary to answer the practice questions.**

**Core Definitions**

**The core definitions in Geometry are point, line, plane and congruence.**

**A**

*point*is an exact location in space. It describes a location, but has no size.## Example Points

**A**

*line*if infinitely many points that extend forever in both directions. Lines have direction and location and are always straight.## Example of a line

**A**

*plane*is a flat surface that contains infinitely connected points that extend forever in all directions. Think of a plane as a huge sheet of paper with no thickness that extends in all directions without end.**Two objects are**

*congruent*if they have the same dimensions and shape. Very loosely, you can think of it as meaning 'equal' but it has a very precise meaning that you should understand completely, especially for complex shapes such as polygons.## Congruent symbol

## Basic Geometry Vocabulary-Points, Lines and Planes (10 practice questions)

**A Line has one ____________. It cannot be measured because it extends in two directions without end. **

**What best describes San Diego, California on a globe?**

**A location in space that is represented by a dot and has no dimensions**

**Point A and Point B are the __________ of line segment AB**

**Coplaner lines that do not intersect. **

## Graphic 2

**This figure (graphic 2) has two dimensions (length and width). It is made up of a "surface" of connected points in space and extends in all up/down, left/right directions. **

## Symbol

**What does the symbol above tell us when it is placed between two things? **

## Graphic 1

**Identify the image in Graphic 1**

## Graphic 3

**What is the term used to communicate that two points lie on the same line as in Graphic 3? **

## Plane P

What is the term used to communicate three or more points lie in the same plane?