Title  Description  Thumbnail Image 

Activity Guide: Building a Scale Model of Himeji Castle 
This handson activity is a companion to the video segment from the Geometry Applications: Angles and Planes video. In particular, it supports the segment on the architecture of Himeji Castle. 

Definition345 Right Triangle 
The definition of the term "345 Right Triangle." 

Definition306090 Right Triangles 
The definition of the term "306090 Right Triangles." 

Definition454590 Right Triangles 
The definition of the term "454590 Right Triangles." 

Definition51213 Right Triangle 
The definition of the term "51213 Right Triangle." 

DefinitionAcute Angle 
The definition of the term "Acute Angle." 

DefinitionComplementary Angle 


DefinitionLegs of a Right Triangle 
The definition of the term "Legs of a Right Triangle." 

DefinitionLine 
The definition of the term "Line." 

DefinitionLine Segment 
The definition of the term "Line Segment." 

DefinitionMidpoint 
The definition of the term "Midpoint." 

DefinitionObtuse Angle 


DefinitionPoint 
The definition of the term "Point." 

DefinitionRay 


DefinitionReflex Angle 


DefinitionRight Angle 


DefinitionRight Triangle 
The definition of the term "Right Triangle." 

DefinitionStraight Angle 


DefinitionSupplementary Angles 
The definition of the term "Supplementary Angles." 

DefinitionVertical Angles 
The definition of the term "Vertical Angles." 