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  2. Parallelogram - Wikipedia

    en.wikipedia.org/wiki/Parallelogram

    The centers of four squares all constructed either internally or externally on the sides of a parallelogram are the vertices of a square. [8] If two lines parallel to sides of a parallelogram are constructed concurrent to a diagonal, then the parallelograms formed on opposite sides of that diagonal are equal in area. [8]

  3. Parallelogram law - Wikipedia

    en.wikipedia.org/wiki/Parallelogram_law

    For the general quadrilateral (with four sides not necessarily equal) Euler's quadrilateral theorem states + + + = + +, where is the length of the line segment joining the midpoints of the diagonals. It can be seen from the diagram that x = 0 {\displaystyle x=0} for a parallelogram, and so the general formula simplifies to the parallelogram law.

  4. Rhombus - Wikipedia

    en.wikipedia.org/wiki/Rhombus

    A rhombus therefore has all of the properties of a parallelogram: for example, opposite sides are parallel; adjacent angles are supplementary; the two diagonals bisect one another; any line through the midpoint bisects the area; and the sum of the squares of the sides equals the sum of the squares of the diagonals (the parallelogram law).

  5. Regular polygon - Wikipedia

    en.wikipedia.org/wiki/Regular_polygon

    All vertices of a regular polygon lie on a common circle (the circumscribed circle); i.e., they are concyclic points. That is, a regular polygon is a cyclic polygon. Together with the property of equal-length sides, this implies that every regular polygon also has an inscribed circle or incircle that is

  6. Trapezoid - Wikipedia

    en.wikipedia.org/wiki/Trapezoid

    The ratio of the areas of each pair of adjacent triangles is the same as that between the lengths of the parallel sides. [13] Let the trapezoid have vertices A, B, C, and D in sequence and have parallel sides AB and DC. Let E be the intersection of the diagonals, and let F be on side DA and G be on side BC such that FEG is parallel to AB and CD.

  7. Hot Dr Pepper with Lemons Is Apparently the Holiday's Most ...

    www.aol.com/lifestyle/hot-dr-pepper-lemons...

    In the meantime, she said to cut the lemon into thin slices. They can be added to the drink, or you can squeeze the juice directly into the liquid.

  8. Pappus's area theorem - Wikipedia

    en.wikipedia.org/wiki/Pappus's_area_theorem

    The extended parallelogram sides DE and FG intersect at H. The line segment AH now "becomes" the side of the third parallelogram BCML attached to the triangle side BC, i.e., one constructs line segments BL and CM over BC, such that BL and CM are a parallel and equal in length to AH.

  9. How rare are female school shooters?

    www.aol.com/news/data-says-rare-female-shooters...

    Of 544 school shooting incidents over an 11-year period, less than 5% of the shooters were female, according to Everytown for Gun Safety.