sreg
Triangle ABC is reflected across line m to form triangle PRS.
B
R
m
с
Which statement must be true?
O The length of AB = the length of SR
O The length of BC = the length of RP
OMZA = MZS
OmZB = mZR

A reflection is a rigid transformation. A rigid transformation does not change the measurement or size of a shape, so the pre-image and the image are congruent.

The angles on the pre-image corresponds to the angles on the image. This also is for line segments.

This means (for angle measurements):

Angle A is congruent to Angle P

Angle C is congruent to Angle S

Angle B is congruent to Angle R

Option D should be the correct answer.

sreg Triangle ABC is reflected across line m to form triangle PRS. B R m с Which statement must be true? O The length of AB = the length of SR O The length of BC = the length of RP OMZA = MZS OmZB = mZR

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sreg
Triangle ABC is reflected across line m to form triangle PRS.
B
R
m
с
Which statement must be true?
O The length of AB = the length of SR
O The length of BC = the length of RP
OMZA = MZS
OmZB = mZR