Questions: If m∠ACB=45°, AB=10 then m∠ECD= □

If m∠ACB=45°, AB=10 then m∠ECD= □
Transcript text: Unit Exam - Congruent Triangles If $\mathrm{m} \angle \mathrm{ACB}=45^{\circ}, \mathrm{AB}=10$ then $\mathrm{m} \angle \mathrm{ECD}=$ $\square$
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Solution

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Solution Steps

Step 1: Identify corresponding angles

Since ΔABC ≅ ΔEDC, the corresponding angles are: ∠A corresponds to ∠E ∠B corresponds to ∠D ∠ACB corresponds to ∠ECD

Step 2: Determine the measure of ∠ECD

Given that m∠ACB = 45°, and ∠ACB corresponds to ∠ECD, then m∠ECD = 45°.

Final Answer

45°

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