Getting to Know Angle Pairs
Getting to Know Angles
Geometry Symbols You Should Know

What Is a Geometry Proof?

A geometry proof — like any mathematical proof — is an argument that begins with known facts, proceeds from there through a series of logical deductions, and ends with the thing you’re trying to prove.

Geometry proofs follow a series of intermediate conclusions that lead to a final conclusion: Beginning with some given facts, say A and B, you go on to say therefore, C; then therefore, D; then therefore, E; and so on till you get to your final conclusion.

image0.jpg

Here’s a very simple example using the line segments in the above figure.

image1.png

And of course, you’d be right. But that’s not how the proof game is played. You have to spell out every little step in your thinking so your argument doesn’t have any gaps. Here’s the whole chain of logical deductions:

image2.png
  • Add a Comment
  • Print
  • Share
blog comments powered by Disqus
How to Measure Angles
Adding and Subtracting Segments and Angles
Getting to Know the Five Simplest Geometric Objects
Getting to Know Planes
How to Measure Line Segments
Advertisement

Inside Dummies.com