<meta http-equiv="refresh" content="1; url=/nojavascript/">

# Definitions and Introduction to Proof

## Formal arguments of mathematical statements written in paragraph, two-column, and flow diagram formats.

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.

## Theorems and Proofs

Analyze and write proofs in three formats: paragraph proof, two-column proof, flow diagram proof.

12
• Interactive Exercise

## Basic Definitions -- Fill in the blank

Basic Geometry definitions are presented. Can you determine the Geometry term to which is being referred?

0
• Interactive Exercise

## Basic Definitions -- True or False

Basic Geometry definitions are presented. Determine if each is true or false.

0
• Interactive Exercise

## Identify Simple Geometric Elements

A simple figure is displayed. When prompted, identify the correct figure.

0
• Interactive Exercise

## Geometry Notation Check

Checks your understanding of segment notation.

0
• Interactive Exercise

## Geometric Line Notation

Displays a statement that uses geometric notation. Is the statement true or false?

0
• Interactive Exercise