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  2. Kite (geometry) - Wikipedia

    en.wikipedia.org/wiki/Kite_(geometry)

    Kite (geometry) A kite, showing its pairs of equal-length sides and its inscribed circle. In Euclidean geometry, a kite is a quadrilateral with reflection symmetry across a diagonal. Because of this symmetry, a kite has two equal angles and two pairs of adjacent equal-length sides. Kites are also known as deltoids, [ 1 ] but the word deltoid ...

  3. Convex set - Wikipedia

    en.wikipedia.org/wiki/Convex_set

    Equivalently, a convex set or a convex region is a set that intersects every line in a line segment, single point, or the empty set. [ 1 ][ 2 ] For example, a solid cube is a convex set, but anything that is hollow or has an indent, for example, a crescent shape, is not convex. The boundary of a convex set in the plane is always a convex curve.

  4. Penrose tiling - Wikipedia

    en.wikipedia.org/wiki/Penrose_tiling

    The kite is a quadrilateral whose four interior angles are 72, 72, 72, and 144 degrees. The kite may be bisected along its axis of symmetry to form a pair of acute Robinson triangles (with angles of 36, 72 and 72 degrees). The dart is a non-convex quadrilateral whose four interior angles are 36, 72, 36, and 216 degrees. The dart may be bisected ...

  5. Rhombus - Wikipedia

    en.wikipedia.org/wiki/Rhombus

    The first property implies that every rhombus is a parallelogram. 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 ...

  6. MACRS - Wikipedia

    en.wikipedia.org/wiki/MACRS

    MACRS. The Modified Accelerated Cost Recovery System (MACRS) is the current tax depreciation system in the United States. Under this system, the capitalized cost (basis) of tangible property is recovered over a specified life by annual deductions for depreciation. The lives are specified broadly in the Internal Revenue Code.

  7. Internal Revenue Service - Wikipedia

    en.wikipedia.org/wiki/Internal_Revenue_Service

    e. The Internal Revenue Service (IRS) is the revenue service for the United States federal government, which is responsible for collecting U.S. federal taxes and administering the Internal Revenue Code, the main body of the federal statutory tax law. It is an agency of the Department of the Treasury and led by the Commissioner of Internal ...

  8. Wyden calls for investigation of youth residential treatment ...

    www.aol.com/wyden-calls-investigation-youth...

    Sen. Ron Wyden (D-Ore.) called for the Department of Justice (DOJ) to investigate youth residential treatment facilities operated by multiple national health care companies, alleging evidence of ...

  9. Nine dots puzzle - Wikipedia

    en.wikipedia.org/wiki/Nine_dots_puzzle

    The "nine dots" puzzle. The puzzle asks to link all nine dots using four straight lines or fewer, without lifting the pen. The nine dots puzzle is a mathematical puzzle whose task is to connect nine squarely arranged points with a pen by four (or fewer) straight lines without lifting the pen. The puzzle has appeared under various other names ...