Cutting an angle in half............another imp process................1/2 an angle in other words...............a right triangle.........................with two sides of 1 unit...................and the angles of 45 degrees..........the hyp is the square root of 2........

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

www.dummies.com/education/math/.../how-to-work-with-45-45-90-degree-triangles/

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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 ...

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The isosceles right triangle. Topics in trigonometry - The Math Page

www.themathpage.com/atrig/isosceles-right-triangle.htm

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In an isosceles right triangle, the equal sides make the right angle. They have ... For any problem involving 45°, the student should not consult the Table. Rather ...

Special Right Triangle 30-60, 45-45, 37-53. Elearning. - Go Geometry

www.gogeometry.com/geometry/special_right_triangle_30_60_45_3_4_5.htm

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A special right triangle is a right triangle with some regular feature that makes calculations on the triangle easier, or for which simple formulas exist. Angle based ...