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Which characteristics best describe a right isosceles triangle?


I. All angles are acute.

II. All side lengths are equal.

III. Two sides meet at a 90° angle.

IV. Two sides are equal in length.

Verified Answer :

IV. Two sides are equal in length.

One way I remember this is in isosceles there are 2 e's and 1 l, an e is a side that is equal and the l is the other side.

isosceles 


zexius

III. and IV. as you need two sides to meet at 90° for it to be a right isosceles triangle, and two sides always need to be equal for it to be an isosceles. Otherwise it's scalene.

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