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The word diagonal derives from the ancient Greek διαγώνιος diagonios, [1] "from corner to corner" (from διά- dia-, "through", "across" and γωνία gonia, "corner", related to gony "knee"); it was used by both Strabo [2] and Euclid [3] to refer to a line connecting two vertices of a rhombus or cuboid, [4] and later adopted into ...
A diagonal is a line segment joining two vertices of a polygon. Diagonal may also refer to: A stand of basic scaffolding on a house construction site, with diagonal braces to maintain its structure. Diagonal brace, a beam used to brace a rectangular structure (such as scaffolding) to withstand strong forces pushing into it
Diagonal pliers, also called side cutters, are a similarly shaped tool used for cutting rather than holding, having a pair of stout blades, similar to scissors except that the cutting surfaces meet parallel to each other rather than overlapping. Ordinary (holding/squeezing) pliers may incorporate a small pair of such cutting blades.
Diagonal pliers Diagonal pliers with uninsulated handles. Diagonal pliers (also known as wire cutters or diagonal cutting pliers, or under many regional names) are pliers intended for the cutting of wire or small stock, rather than grabbing or turning. The plane defined by the cutting edges of the jaws intersects the joint rivet at an angle or ...
A semi-circular kick is a round kick to forty five degree roundhouse kick (or "diagonal kick"). Most popular in kick-boxing, lethwei, and muay Thai, it can be used in almost every situation. With this kick, all parts of the opponent's body can be attacked and every kind of attack can be countered.
The dihedral symmetries are divided depending on whether they pass through vertices (d for diagonal) or edges (p for perpendiculars), and i when reflection lines path through both edges and vertices. Cyclic symmetries in the middle column are labeled as g for their central gyration orders.
For a square matrix, the diagonal (or main diagonal or principal diagonal) is the diagonal line of entries running from the top-left corner to the bottom-right corner. [ 1 ] [ 2 ] [ 3 ] For a matrix A {\displaystyle A} with row index specified by i {\displaystyle i} and column index specified by j {\displaystyle j} , these would be entries A i ...
Bisect-diagonal quadrilateral: one diagonal bisects the other into equal lengths. Every dart and kite is bisect-diagonal. When both diagonals bisect another, it's a parallelogram. Ex-tangential quadrilateral: the four extensions of the sides are tangent to an excircle.