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  2. Special right triangle - Wikipedia

    en.wikipedia.org/wiki/Special_right_triangle

    Set square shaped as 45° - 45° - 90° triangle The side lengths of a 45° - 45° - 90° triangle 45° - 45° - 90° right triangle of hypotenuse length 1.. In plane geometry, dividing a square along its diagonal results in two isosceles right triangles, each with one right angle (90°, ⁠ π / 2 ⁠ radians) and two other congruent angles each measuring half of a right angle (45°, or ...

  3. File:45° 45° 90° Special Right Triangle.svg - Wikipedia

    en.wikipedia.org/wiki/File:45°_45°_90°_Special...

    English: This file illustrates the special right triangle of angles 45°, 45° and 90°. Inside, the triangle is depicted with all of its angles and side lengths. The right angle is marked as a small square. To the right of the 90° angle is another angle represented by an arc, and its measure, 45°, is written to the left of it. Atop the right ...

  4. Ailles rectangle - Wikipedia

    en.wikipedia.org/wiki/Ailles_rectangle

    Drawing a line connecting the original triangles' top corners creates a 45°–45°–90° triangle between the two, with sides of lengths 2, 2, and (by the Pythagorean theorem) . The remaining space at the top of the rectangle is a right triangle with acute angles of 15° and 75° and sides of 3 − 1 {\displaystyle {\sqrt {3}}-1} , 3 + 1 ...

  5. File:45-45-triangle.svg - Wikipedia

    en.wikipedia.org/wiki/File:45-45-triangle.svg

    Diagram demonstrating the ratios of the sides of a 45-45-90 special right triangle. ... of a 30-60-90 special right triangle. Created in Inkscape. ... Images; File ...

  6. Set square - Wikipedia

    en.wikipedia.org/wiki/Set_square

    These set squares come in two usual forms, both right triangles: one with 90-45-45 degree angles, the other with 30-60-90 degree angles. Combining the two forms by placing the hypotenuses together will also yield 15° and 75° angles.

  7. These are the pedophile symbols you need to know to protect ...

    www.aol.com/news/2016-04-26-these-are-the...

    You can keep your children safer by knowing the symbols and codes pedophiles use to recognize and communicate with each other.

  8. 5-ish things to watch in the first round of the College ...

    www.aol.com/5-ish-things-watch-first-110045665.html

    Shop the best under-$50 clothing items to grab right now on Amazon AOL Last-minute gifts from Amazon that will still arrive by Christmas — but you need to order ASAP

  9. List of triangle topics - Wikipedia

    en.wikipedia.org/wiki/List_of_triangle_topics

    This list of triangle topics includes things related to the geometric shape, either abstractly, as in idealizations studied by geometers, or in triangular arrays such as Pascal's triangle or triangular matrices, or concretely in physical space.