Given:
AC – AR
<1 = <2
Prove:
<3 =<4

Answer:
ΔCTA ≅ ΔDRA
Step-by-step explanation:
Triangles CTA and DRA are congruent by ASA postulate. This is because:
Then, correspondent angles and sides are congruent, for example, ∠3 ≅ ∠4