Atriangle is dilated by a scale factor of 1/5 and then rotated 90 degree clockwise about the origin. why is the image similar to the pre-image? check all that apply. a) the corresponding sides of the triangles are congruent. b) the corresponding angles of the triangles are congruent. c) the corresponding sides of the image are 5 times as long as those of the pre-image. d) the image is a reduction of the pre-image. e) neither the dilation nor the rotation change the shape of the triangle. f) the rotation reduces the size of the triangle.

If a triangle is dilated by a scale factor of 1/5 and then rotated 90 degree clockwise about the origin, the image similar to the pre-image because:

B) The corresponding angles of the triangles are congruent.

E) Neither the dilation nor the rotation change the shape of the triangle.

Transformation is the movement of an object from an initial location to a new location. Types of transformation are rotation, reflection, translation and dilation.

If an object its dilated, it is either increased or reduced. Whereas rotation only changes the orientation of the object.

Two objects are similar if they have the same shape and the ratio or their sides are in the same proportion. Hence they have the same angle measure.

Hence if a triangle is dilated by a scale factor of 1/5 and then rotated 90 degree clockwise about the origin, the image similar to the pre-image because:

B) The corresponding angles of the triangles are congruent.

E) Neither the dilation nor the rotation change the shape of the triangle.

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answer: 45

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