Mathematics · Geometry
Points A and D are on the same side of line segment BC such that ∠DBC = ∠ACB = 40° and ∠ABD = ∠DCA = 20°. Which of the following congruency relations is correct?
- 1ΔABC ≅ ΔDBC
- 2ΔABC ≅ ΔBDC
- 3ΔACB ≅ ΔDBC
- 4ΔACB ≅ ΔBDC✓
Correct answer
ΔACB ≅ ΔBDC
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