We get triangle ABC by plotting the point A (1, 5), B (5, 6), C (5, 5) on the graph paper when rotated through 180° about the origin. The new position of the point is:
A (1, 5) → A' (-1, -5)
B (5,6) → B' (-5, -6)
C (5, 5) → C' (-5, -5)
Thus, the new position of ∆ABC is ∆A’B’C’.
When rotating a point 180 degrees counter clockwise about the origin our point A(x ,y) becomes A'(-x,-y). So all we do is make both x and y negative.
A rotation is a transformation in a plane that turns every point of a preimage through a specified angle and direction about a fixed point. The fixed point is called the centre of rotation . The amount of rotation is called the angle of rotation and it is measured in degrees. Use a protractor to measure the specified angle counter clockwise
We know that
Isosceles triangles are those triangles that have at least two sides of equal measure.
Scalene triangles are those triangles that have all three sides different.
An object when rotated in a particular direction, around a point exactly similar to the original object is known to have rotational symmetry..
Learn more about rotation of triangle here : brainly.com/question/27949069
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