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How do you rotate a triangle around a point that is not origin?
Wiki User
∙ 12y ago
If you know how to rotate a triangle around the origin, treat the point as the origin.
If you have Cartesian coordinates (that is x, y pairs) for the points of the triangle,
subtract the coordinates of the centre of rotation from the coordinates of the triangle, do the rotation and then add them back on.
Doing it geometrically:
- Draw line from centre of rotation to a point (for example a vertex)
- Measure the required angle from this line and draw in the rotated line
- Measure the distance from the centre of rotation to the original point and measure along the rotated line the required distance to get the rotated point.
- repeat for as many points as needed (eg the 3 vertices of the triangle) and join together the rotated points in the same was as the original points.
[The construction lines drawn to the centre of rotation can be erased once the rotated point is found.]
Wiki User
∙ 12y ago
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How do you rotate a shape 315 degrees clockwise about the origin?
The point with coordinates (p, q) will be rotated to the point with coordinates [(p - q)/sqrt(2), (p + q)/sqrt(2)].
Which point of concurrency in a triangle is sometimes called the center of gravity of the triangle?
The point where the lines which connect one vertex of the triangle and the middle of the opposite side intersect.
What is the point of concurrency of the perpendicular bisectors of a triangle called?
The circumcenter, the incenter is the point of concurrency of the angle bisectors of a triangle.
Is the three perpendicular bisector of a triangle intersect at a point in the exterior of the triangle true or false?
The three ANGLE bisectors of a triangle also bisect the sides, and intersect at a point INSIDE the triangle. The angle bisectors are not necessarily perpendicular to them. The perpendicular bisectors of the sides can intersect in a point either inside or outside the triangle, depending on the shape of the triangle.
The point of concurrency of the angle bisectors of a triangle is called?
incenter of a triangle
How do you rotate a triangle around a point?
turn it from the middle
To turn around a center point?
To turn around a centre point is to rotate.
When do you rotate triangle clockwise at 90 degree how does it look like?
it will turn on a pivot point of the triangle.
How do you rotate a triangle 90 degrees about a point?
Trace the triangle on tracing paper, flip the tracing paper so the drawn triangle is touching the paper and then put your pencil on the point (with the tracing paper underneath) that you need to rotate from. Then rotate the paper 90 degrees and draw over the triangle you drew on the tracing paper to stamp it down.
How do you reflect a figure around the origin?
The best way is this:Draw a line from the point closest to the origin to the actual origin. Rotate the line however many degrees you are told, whichever way you are told. After you have the point closest to the origin rotated, you can either rotate the other points the same way or just draw them in based on where the other point lies.Another way, sort of the cheater way, is to just take a piece of tracing paper and trace the figure onto it. Hold it down by pressing your pencil on the tracing paper where the origin is, and rotating it however many degrees, whichever way you are told.This is for ROTATE. To reflect just use the opposite signs on the coordinates.
What is the name of the point at which all of the triangle's perpendicular bisectors intersect?
Circumcenter, this is the center-point of a circle circumscribed around the triangle. If the triangle is obtuse, then this point is outside the triangle and if the triangle is a right triangle, then the point is the midpoint of the hypotenuse.
What is it called when you rotate a figure around a point?
A rotation
How do you rotate a figure 90 degrees counter clockwise then reflect over y axis?
I dont really know if this is right but i think to do this problem you have to take a point then rotate the paper counter clockwise around the origin then you have a new point which is called a prime. Then reflect it over the y axis on the graph.
What are epicycles?
an epicycle is a system where things rotate around a fixed point.
What does a lever need to be a lever?
needs to have a fixed point that it can rotate around
What is the earths center of gravity?
Its a theoretical point, if you threw it in the air spinning, it would rotate around this point.
When two complex numbers are added together their sum can BEST be represented by which geometric figure?
A triangle, with one of the complex numbers represented by a line from the origin to the number, and then move from that point up and over the amount of the next complex number. Then draw a line segment from the origin to the final point.
