Question

if a triangle is rotated 180 degrees around its centroid, what is the effect on the triangle’s orientation? a. the triangle changes shape b. the triangle remains congruent but is flipped c. the triangle inverts color d. the triangle disappears what is the difference in angle measure between the original and the image in a reflection? a. 0 degrees b. 360 degrees c. 90 degrees d. 180 degrees what does a dilation transformation change about a figure? a. color b. shape c. orientation d. size in a geometric transformation, which of the following would be considered a rigid motion? a. shearing b. dilation c. reflection d. scaling

Explanation:

1. Rotating a triangle 180 - degrees around centroid flips it while keeping it congruent.
2. Reflection preserves angle measures (difference is 0 degrees).
3. Dilation changes size of a figure.
4. Reflection is a rigid - motion as it preserves shape and size.

Answer:

1. b. The triangle remains congruent but is flipped
2. a. 0 degrees
3. d. Size
4. c. Reflection