Reflection across the line y = -x followed by a rotation 180° counterclockwise about the origin. Which is the correct answer for reflection across the line y? Let us look at some examples to understand how 90 degree clockwise rotation can be done on a figure. Rule : When we rotate a figure of 90 degrees clockwise, each point of the given figure has to be changed from (x, y) to (y, -x) and graph the rotated figure. What is the rule for 90 degrees clockwise? The 180 degree rotation acts like both a horizontal (y-axis) and vertical (x-axis) reflection in one action. The reflection is the same as rotating the figure 180 degrees. Is reflection the same as 180 degree rotation? The rule for a reflection over the y -axis is (x,y)→(−x,y). If you reflect over the line y = -x, the x-coordinate and y-coordinate change places and are negated (the signs are changed). When you reflect a point across the line y = x, the x-coordinate and y-coordinate change places. What is the rule for a reflection over Y X? You can rotate a rectangle through 90 degrees using 2 reflections, but the mirror line for one of them should be diagonal. If you have a rectangle that is 2 units tall and 1 unit wide, it will be the same way up after a horizontal or vertical reflection. Is a 90 degree rotation the same as a reflection?ġ Answer. How do you rotate a figure 90 degrees clockwise about a point?Īnswer: To rotate the figure 90 degrees clockwise about a point, every point(x,y) will rotate to (y, -x). When we rotate a figure of 90 degrees clockwise about the orign, each point of the given figure has to be changed from (x, y) to (y, -x) and graph the rotated figure. What is a 90 degree clockwise rotation about the origin?
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |