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Q: What is a triangle with an angle equal to 90 degrees?

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A right angle triangle

right triangle

A right triangle is a triangle in which one angle is equal to 90 degrees and the remaing two angles are acute(ie., less than 90 degree). so this triangle is a right angle triangle.

If you only know one angle, that angle is greater than 90 degrees, then the triangle is obtuse If that angles is equal to 90 degrees, then the triangle is a right triangle. If it is less than 90 degrees, you don't know enough information to classify the triangle.

acute angle is an angle that is less that 90 degrees. An isosceles triangle is a triangle that has 2 equal sides and 2 equal angles.

No, a right triangle must have a right angle (by definition). Because there is 180 degrees in a triangle and a right angle is 90 degrees, that leaves the remaining two angles having to equal 90 degrees. Therefore, a triangle cannot have an obtuse angle.

An obtuse triangle.

Any triangle that has an angle measuring 90 degrees is a right triangle.

A triangle with one angle over 90 degrees is an obtuse triangle.

A triangle with a 90° angle is called a "right triangle."

this is known as an acute triangle acute triangles-no angles congruent or greater than 90 degrees right-one angle equal to 90 degrees obtuse-triangle with one angle greater than 90 degrees

The classifications of a triangle are:Right Triangle- has one angle that is 90 degreesEquilateral Triangle- has three equal sides and three equal angles (each is 60 degrees)Isosceles Triangle- has two equal sides and two equal anglesScalene Triangle- has no congruent sidesAcute Triangle- has three acute angles (less than 90 degrees)Obtuse Triangle- has one obtuse angle (more than 90 degrees)

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