(02.05)Figure RST is reflected about the y-axis to obtain figure R’S’T’: A coordinate plane is shown. Triangle RST has vertices R at negative 5 comma 1, S at negative 6 comma 4, and T at negative 1 comma 5. Triangle R prime S prime T prime has vertices R prime at 5 comma 1, S prime at 6 comma 4, and T prime at 1 comma 5.

Which statement best describes the relationship between the two figures?

Figure RST is bigger than figure R’S’T’.

Figure RST is congruent to figure R'S'T'.

The measure of angle R is equal to the measure of angle S’.

The measure of angle R is equal to the measure of angle T’.

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