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Q: Do all angles in a triangle have to be acute?

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A triangle with 3 acute angles is an acute triangle. All the angles in an acute triangle are acute.

A triangle, all of whose angles are acute.A triangle, all of whose angles are acute.A triangle, all of whose angles are acute.A triangle, all of whose angles are acute.

An acute triangle.

In an acute triangle, all three angles are acute.

No. By definition, an acute triangle is a triangle where all three angles are <90 degrees. Therefore, an equilateral triangle, where all the angles are 60 degrees would qualify as an acute triangle.

An acute angled triangle.

An acute triangle *is* a triangle with all acute angles. For example, an equilateral triangle where all three angles are 60°.If a triangle has one 90° angle, then it is a right triangle.If it has one angle greater than 90°, then it is an obtuse triangle.

In an equilateral triangle, all of the angles are equal, which makes them all 60 degrees. Therefore, all three angles are acute.

It is an acute triangle and if the acute angles are of different sizes then it is a scalene triangle.

YES IT CAN.ACTUALLY A TRIANGLE IT NOT A ACUTE TRIANGLE UNLESS ALL ANGELS ARE ACUTE ANGLES. ACUTE ANGLES ARE LESS THAN 90 DEGREE.

An acute triangle is a triangle with all angles acute (for example, a triangle with angles 64 ,36, and 80). An acute angle is an angle less than 90 degrees. Also, all angles in a triangle MUST sum to 180 degrees.

False ------------------------------------ An acute triangle is one in which all angles are acute angles. An acute angle is less than 90°. A right angle is 90°, which is equal to 90° not less than 90° Therefore all the angles of a right triangle are not all acute Thus a right triangle is not an acute triangle.

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