Answer:
no. the triangle would be acute
Step-by-step explanation:
[tex]a^2 +b^2=c^2[/tex] ← formula for right triangle
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[tex]28^2+53^2=45^2[/tex]?
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[tex]28^2=784\\53^2=2809\\45^2=2025[/tex]
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[tex]784+2809=3,593[/tex]
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[tex]3,593 > 2025\\a^2 +b^2 > c^2[/tex]
which means the triangle is acute, not right.
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−Kallmekrish