Question

These two triangles can be shown to be congruent using which transformation? A) reflection over the x-axis B) reflection over the y-axis C) translation right 4 units D) rotation of 180°

Answer 1

answer : option (B) reflection over y-axis.

explanation : from figure, it is clear that triangle located right side of y - axis is just mirror image of triangle located left side of y - axis where here y -axis is working as plane mirror ( and we know shape and size of image formed by plane mirror is just equal to shape and size of the given object ) . that means, theses triangles can be shown to be congruent using reflection over the y-axis.

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