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If one angle of a triangle is 90°, then the other two add to 90°. Write the To Prove statement
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If one angle of a triangle is 90°, then the other two add to 90°.

Write the To Prove statement

User Punter Vicky
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So a triangle is always 180°.
If one angle is 90° then we can subtract that from the 180° to find out how much the other two will be.
180°-90°=90°
So the other two angles added together will have to equal 90°.
User Richard Scholtens
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