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Home > CC4 > Chapter 11 > Lesson 11.2.3 > Problem 11-73


In the figure at right, DE = BE = AE = CE. Is ΔDAB ≅ ΔCBA? Justify your answer using a flowchart. Homework Help ✎

Make a drawing on paper and mark the four congruent segments.

Both triangles, although they overlap each other, have right angles, and they share a side AB.
Review the Math Notes box in section 7.1.7.

ΔAEB is an isosceles triangle, which makes ∠CAB≅∠DBA.
Consider which triangle congruence condition can be met.