Identify all acute angles in the drawing below.
2BCD
ZBCE
ZACE. ZECD
ZACD

Answer:
(c) ∠ACE, ∠ECD
Step-by-step explanation:
Acute angles have a measure that is less than 90°.
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In this figure the only acute angles are the ones that are part of the right angle on the left:
∠ACE, ∠ECD