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who doesn't know this it's a right triangle.

right triangle

Q: A triangle with one right angle?

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a right triangle has one right angleA triangle with a right angle is a right triangle.

If one angle is a right angle, it is a right triangle. If one angle is an obtuse angle, it is an obtuse triangle. If there are no right nor obtuse angle then it is an acute triangle.

A right triangle is a triangle in which one angle is a right angle (that is, a 90-degree angle). The relation between the sides and angles of a right triangle is the basis for trigonometry.

A triangle with one angle measuring 90˚ is a right triangleIt's a right triangle because the 90˚ angle is a right angle

A 90o angle is also called a Right Angle, so a triangle that has one 90o angle is a Right angle triangle.

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a right triangle has one right angleA triangle with a right angle is a right triangle.

If one angle is a right angle, it is a right triangle. If one angle is an obtuse angle, it is an obtuse triangle. If there are no right nor obtuse angle then it is an acute triangle.

right-angle triangle has at least one right angle .

A triangle that has one right angle and is isosceles is called an isosceles right triangle.

A right triangle is a triangle in which one angle is a right angle (that is, a 90-degree angle). The relation between the sides and angles of a right triangle is the basis for trigonometry.

A triangle with one angle measuring 90˚ is a right triangleIt's a right triangle because the 90˚ angle is a right angle

A right triangle

A 90o angle is also called a Right Angle, so a triangle that has one 90o angle is a Right angle triangle.

right triangle

a right triangle has one right angle and two acute angles

A right angle triangle.

A Right Triangle or sometimes called a Right-angled Triangle has one angle = 90 degrees