The vertices of triangle ABC are A (1,5), B (3,9), and C (5,3). The vertices of triangle DEF are D (-3,3), E (-2,5), and F (-1,2). Which conclusion is true about the triangles? A. The ratio of their corresponding sides is 1:3.
B. They are congruent by definition of congruence in terms of rigid motions.
C. The ratio of their corresponding angles is 1:3.
D. They are similar by definition of similarity in terms of a dilation.

Acircle has a circumference of 2 pi cm. which statement about the circumference and area is true? a comparison of the area and circumference is not possible since the area cannot be determined. the numerical values of the circumference and area of the circle are equal. the numerical value of the circumference is greater than the numerical value of the area. the numerical value of the circumference is less than the numerical value of the area.

X+y=-4 x-y=2 use elimination with adding and subtraction

Two airplanes start at the same place and travel in opposite directions, one at 395 miles per hour and the other at 422 miles per hour. how many hours will it take for the planes to be 2451 miles apart?