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Q: Is an acute triangle sometimes an isosceles?

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no

The two acute angles are always equal.

An acute isosceles triangle has three acute angles (

Yes, that's possible. For instance a triangle with the angles 70°, 70° and 40° is both acute and isosceles.

Yes, but a triangle is acute only if all three of its angles are acute (< 90o).An isosceles triangle can be an acute triangle, but it doesn't have to be.An acute triangle can be an isosceles triangle, but it doesn't have to be.That depends on the sizes of its angle because an isosceles triangle has 2 equal sides and 2 equal angles which could be 70 degrees, 70 degrees and 40 degrees which are all acute angles that add up to 180 degrees.

Related questions

Yes, it can.

If it has 2 equal acute angles and 1 obtuse angle then it is an isosceles triangle.

Sometimes an isosceles triangle but never a scalene triangle with 3 interior acute angles.

It is possible for an isosceles triangle to be an acute triangle because, in an acute triangle all the angles have to be less than 90o.

Acute.

It can be but does not have to be.

no

Only when it has 2 equal acute angles and 1 obtuse angle that it is an isosceles triangle

An Isosceles triangle has 2 or 3 acute angles.

Are isosceles triangle sometimes an equilateral triangle

Yes

The two acute angles are always equal.

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