Saturday, February 4, 2017

Perfect numbers and special triangles.....


Special Right Triangles - 45-45-90 - Regents Prep

www.regentsprep.org/regents/math/algtrig/att2/ltri45.htm

Special right triangles intro (part 1) - Khan Academy

https://www.khanacademy.org/...right-triangles/.../45-45-90-triangl...
With a 90 angle and a 45 angle, the last angle must be 45 so that the triangle angles sum to 180. This ...

Identifying the 45 – 45 – 90 Degree Triangle - dummies

www.dummies.com/education/math/.../identifying-the-45-45-90-degree-triangle/
geometry-copying-angle ... geometry-right-angles ... A 4545 – 90 degree triangle (or isosceles right triangle) is a triangle with angles of 45°, 45°, and 90° and ...

How to Work with 45-45-90-Degree Triangles - dummies

www.dummies.com/education/math/.../how-to-work-with-45-45-90-degree-triangles/
All 45-45-90-degree triangles (also known as 45ers) have sides that are in a unique ratio. ... A 45-45-90-degree right triangle. Why is this triangle important? Because any time you're given one side of a 45er triangle, you can figure out the ...

Special right triangle - Wikipedia

https://en.wikipedia.org/wiki/Special_right_triangle
Jump to Angle-based - "Angle-based" special right triangles are specified by the relationships ... of trigonometric functions for the angles 30°, 45°, and 60°.

Solve a 45-45-90 Triangle with GradeA - GradeAMathHelp.com

www.gradeamathhelp.com/45-45-90-triangle.html
A 45-45-90 triangle is a special right triangle. ... refer to the two congruent sides as legs, and the other side (which is opposite the right angle) as the hypotenuse.

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