The interior angles ∠A, ∠B and ∠C of △ABC are in the ratio 1:2:1.
How many exterior angles of this triangle will be equal? ___
What are the measures of those exterior angles? ___ _____
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The interior angle opposite to exterior ∠CBX are ∠BAC and ∠ACB.
Also, the interior angles opposite to exterior ∠BAY are ∠ABC and ∠ACB.
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