The Allen key, or hex key, was invented in 1910. It was invented by William G. Allen, but first commercialized by P. L. Robertson.
Given a line L and a point P. Reflection P' of P in L is the point such that PP' is perpendicular to L, and PM = MP', where M is the point of intersection of PP' and L. In other words, P' is located on the other side of L, but at the same distance from L as P. P' is said to be a mirror or symmetric image of P in L. The line L is called the axis of symmetry or axis of reflection.P' exists for any P. Let's write SL(P) = P'. If P' = SL(P), then P is the reflection in L of P':P = SL(P'). So that repeated reflection does noting: it does not move a point. Formally,SL2 = I,Where I is the identity transform. SL(P) = P, iff P lies on L.The reflection transform SL applies to arbitrary shapes point-by-point. Each point of a given shape S is reflected in L, and the collection of these reflections is the symmetric image of S: SL(S). To determine SL(S) when S is a polygon, suffice it to reflect its vertices. This is exactly what has been done in the applet below.On the other hand, if S' is known to be a mirror image of S, then any pair of points P and P' not fixed by the reflection (P ≠ P'), the axes of reflection is uniquely determined as the perpendicular bisector of PP'.In the applet, you can create polygons with a desired number of vertices, drag the vertices one at a time, or drag the polygon as a whole. Axes of reflection can also be dragged. They rotate if dragged near the applet's border, or translate if dragged nearer their midpoint.
there are 32 types of thesis statements possible
Huey P Newton Was Agnostic.
No it does not. It represents momentum.
P. Allen Smith was born in 1960.
P. Allen Smith Gardens was created in 2000.
No. P. Allen Smith and his wife Debbie do not have any children together.
Debbie Smith
P- Allen Smith Gardens - 2000 was released on: USA: 2000
Debbie Smith
yes she is
P Allen Smith married Debbie Smith in December 2012. As of May 2014, they are still married and have no children.
P- Allen Smith Gardens - 2000 Herbology was released on: USA: 27 May 2013
P- Allen Smith Gardens - 2000 Maintenance was released on: USA: 6 February 2010
P- Allen Smith Gardens - 2000 Annuals was released on: USA: 31 March 2001
P. Allen Smith Gardens - 2000 Entertaining was released on: USA: 7 July 2012