# 45-45-90 Right Triangles

## Leg times sqrt(2) equals hypotenuse.

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.

## 45-45-90 Right Triangles

This concept teaches students about the 45-45-90 special right triangle and how to apply its properties.
MEMORY METER
This indicates how strong in your memory this concept is
1

## 45-45-90 Triangles

Learn to identify isosceles right triangles.
MEMORY METER
This indicates how strong in your memory this concept is
0

## 45-45-90 Right Triangles

This concept teaches students about the 45-45-90 special right triangle and how to apply its properties.
MEMORY METER
This indicates how strong in your memory this concept is
0
• PLIX

## 45-45-90 Right Triangles: Baseball Diamond

45-45-90 Right Triangles Interactive
MEMORY METER
This indicates how strong in your memory this concept is
0
• Video

## 454590 Right Triangles Principles

This video gives more detail about the mathematical principles presented in 454590 Right Triangles.
MEMORY METER
This indicates how strong in your memory this concept is
1
• Video

## 454590 Right Triangles Examples

This video shows how to work step-by-step through one or more of the examples in 454590 Right Triangles.
MEMORY METER
This indicates how strong in your memory this concept is
1
• 0
• Critical Thinking

## 45-45-90 Right Triangles Discussion Questions

A list of student-submitted discussion questions for 45-45-90 Right Triangles.
MEMORY METER
This indicates how strong in your memory this concept is
0
• Real World Application

## Fighting the War on Drugs Using Geometry and Special Triangles

Why should drug dealers study their geometry?
MEMORY METER
This indicates how strong in your memory this concept is
0
• Real World Application

## Puzzling Triangles

Learn about a popular puzzle game that is based on 45-45-90 triangles.
MEMORY METER
This indicates how strong in your memory this concept is
0
• Study Guide