In this session, you will build triangles and quadrilaterals to explore their properties. Classification is an important part of geometry and other areas of mathematics. By creating and manipulating triangles and quadrilaterals, you will develop a sense of logical classifications and how different figures are related.

Part A:	Different Triangles
Part B:	Linkage-Strip Constructions
Part C:	Building Towers
Homework

In this session, you will learn the following:

How to classify triangles according to some of their features

A rule that describes when three given lengths will make a triangle and when they will not

A rule that describes when four given lengths will make a quadrilateral and when they will not

How to use what you've learned about geometry and the properties of figures to help with a construction task

Throughout the session you will be prompted to view short video segments. In addition to these excerpts, you may choose to watch the full-length video of this session.

Previously Introduced:

New in This Session:

altitude
perpendicular bisector

acute triangle
congruent
equilateral triangle
isosceles triangle
obtuse triangle
right triangle
scalene triangle
side-angle-side (SAS) congruence
side-side-side (SSS) congruence
similar triangles
triangle inequality

Learning Math Home | Geometry Home | Glossary | Map | ©

Session 2: Index | Notes | Solutions | Video