Rebecca is given two triangles, AABC and A DEF. At first glance, she thinks that the triangles are congruent. How can she use what she knows about
rotations and triangle congruence to prove the triangle congruence?
D
30°
3 cm
65°
30°
B
3 cm
65°
LU
O A. She can rotate AABC 90° and then compare the angles and sides.
She will see that the triangles are congruent by the Angle Side
Angle theorem.
B. She can rotate ADEF 90° and then compare the angles and
sides. She will see that the triangles are congruent by the Angle
Side Angle theorem.
O C. She can rotate AABC 90° and then compare the angles and sides.
She will see that the triangles are congruent by the Side Side Side
theorem.
O D. She can rotate ADEF 90° and then compare the angles and
sides. She will see that the triangles are congruent by the Side
Side Angle theorem.