<img src="https://d5nxst8fruw4z.cloudfront.net/atrk.gif?account=iA1Pi1a8Dy00ym" style="display:none" height="1" width="1" alt="" />

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

by CK-12 //at grade
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

by CK-12 //at grade
Learn to identify isosceles right triangles.
MEMORY METER
This indicates how strong in your memory this concept is
0
• PLIX

45-45-90 Right Triangles: Baseball Diamond

by CK-12 //at grade
45-45-90 Right Triangles Interactive
MEMORY METER
This indicates how strong in your memory this concept is
0
• Video

454590 Right Triangles Principles

by CK-12 //at grade
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

by CK-12 //at grade
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

45-45-90 Right Triangles Quiz

by CK-12 //at grade
Ten question quiz. Students must solve for the missing sides of 45-45-90 triangles. Students must also find the area, perimeter, and length of the diagonals of squares using their knowledge of 45-45-90 triangles.
MEMORY METER
This indicates how strong in your memory this concept is
0
• 0
• Critical Thinking

45-45-90 Right Triangles Discussion Questions

by CK-12 //at grade
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

by CK-12 //at grade
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

by CK-12 //at grade
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

Special Right Triangles Study Guide

by CK-12 //at grade
The special triangles 45-45-90, 30-60-90, and equilateral triangle are covered in this study guide.
MEMORY METER
This indicates how strong in your memory this concept is
0