Sujet: rotation liste de sujets
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	l'équation d'une rotation dans un graphique cartésien		2001-11-14
		Ghaith pose la question : je d6sir que vous me rafraichissez un peu la mémoire s.v.p. j'aimerai savoir l'équation d'une rotation dans un graphique cartésien merci Claude Tardif lui répond.
	A schedule for observing our peers		2015-01-23
		Jennifer pose la question : I am a sales trainer. Each month we need to observe one of our peers and give feedback. What this means is every month, not only am I observing someone, but someone is also observing me. For example, in January, Amy observes Tracy, Tracy observes Rachel, Rachel observes Ryan, and so on. The last person would then observe Amy, bringing it full circle. There are 10 trainers on my team. How do I set it up to where each trainer observes another trainer only once over the course of the year (and in return, each trainer is only being observed once by each person)? I know they will eventually repeat but would that start in the 10th month? Robert Dawson lui répond.
	A rotation schedule for 14 teams		2014-07-08
		Daniel pose la question : I am organizing team activities for a summer camp. We have 14 teams and 7 rotations and 7 different games. every team will play a different game each rotation. Where I am having trouble is I would like each team to play a different team each rotation without a repeat. Is that possible? if so what is the formula? Victoria West lui répond.
	Symmetries of a polyhedron		2009-03-02
		Vincent pose la question : I want to ask is there a formula to find out the number of axes of rotation & plane of reflection of a 3D figure, like pentagon, pyramid? Chris Fisher lui répond.
	Rotating letters		2007-11-26
		sherry pose la question : Ms. Thomas said to her class, when my older was little his nickname was Zed. The nickname my brother gave me was like his but with the first letter turned 90 degrees the second letter changed to the first letter of the alphabet and the third letter turned a half rotation. Does anyone know what my nickname was. My brother gave me the nickname because I slept too much. Could you please explain this to me so I can help my child solve it. Thanks Leeanne Boehm lui répond.
	Rotational energy needs		2007-08-29
		will pose la question : how much energy in KW do i need to start and subsequently rotate a 4 ton fly wheel of 1 metre radius at 12 rpm? Stephen La Rocque lui répond.
	Three points on the circumference of a circle		2007-07-30
		Bharathi pose la question : given a circle with radius r and a point x,y on its circumference,output two other points x1,y1 and x2,y2 on the circle so thar all 3 points form a equilateral triangle. Stephen La Rocque lui répond.
	A rotated rectangle		2007-04-16
		Graham pose la question : There is a circle inside which from the centre to the top is a rectangle. Size is unimportant. If I the rectangle is at 0 degrees and I know the co-ordinates of the 4 corners I can do a check to see whether a given point x,y is inside the rectangle or not. Question : If the rectangle is rotated by 50 degrees how do I check then as the lines of the rectangle are not perfectly straight with regards to x and y ie at 0 degrees x changes but y is constant and vice versa. At 50 degrees x and y change together. Penny Nom lui répond.
	The product of of two rotations		2006-12-17
		Katie pose la question : Is the product of of two rotations over a different center point always a translation? Walter Whiteley lui répond.
	Two gears		2004-10-14
		Lindsay pose la question : "There are two gears, a small one on the left and a larger one on the right. The gear on the right makes 1 revolution. The gear on the left makes two revolutions. Suppose the gear on the right is turned through an obtuse angle. Will the gear on the left make a full turn?" Penny Nom lui répond.
	Lines of symmetry		2002-04-22
		Cindie pose la question : How many lines of symmetry do the following figures contain? trapezoid: rhombus: hexagon: pentagon: Walter Whiteley lui répond.
	Rotation		2001-01-25
		A student pose la question : If I have a rectangle 2inches long and 4 inches wide and I rotate the rectangle 45 degrees will the length still be 2 inches? Penny Nom lui répond.
	The angle of rotation		2000-08-03
		Jay pose la question : I have the following information Given. (X1, Y1) Origional Point (X2, Y2) Origional Point After a Rotation (Xa, Xb) Center of Rotation What formula would I use to figure out the angle the point was rotated? Chris Fisher and Harley Weston lui répond.
	Rolling Circles		1999-09-12
		Craig Ellis pose la question : We have a circle of radius 3. inside the circle and tangent to the circle of radius 3 at one point is a circleof radius 1. The question is if we could roll the smaller circle around the inside of the larger circle how many revolutions would it take to get around to where we started. Chris Fisher and Walter Whiteley lui répond.
	Shape-preserving transformations		1999-05-04
		J McAndrew pose la question : A shape preserves its shape if a rotation, translation or scaling is performed on it. Are these the only continuous transformations which have this property? These transformations if performed on the parts and then summed have the same effect as the transformation being applied to the whole; are these linear transformations? Who, and what area of mathematics has classified all transformations of this type completely? Chris Fisher lui répond.
	Frieze Patterns		1998-08-19
		Brian Bairstow pose la question : I am doing a research project on frieze patterns (also called band patterns or border patterns). I know that there are exactly seven different types of frieze patterns, but I have been unable to find a proof for this. If you could tell me this proof, or tell me some internet sites on which I can find material on this, I would be very grateful. Chris Fisher lui répond.

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