In an obtuse triangle, there can be at most one set of perpendicular lines, which are the altitudes from the vertices to the opposite sides. Since one of the angles is greater than 90 degrees, the altitudes from the vertices opposite the obtuse angle will intersect the extension of the opposite side rather than the side itself. Therefore, while there are three altitudes, only one can be perpendicular to the side of the triangle.
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The 2 perpendicular sides of a right angle triangle intersect each other at right angles
A triangle can have at most one obtuse angle, but triangles do not necessarily have any obtuse angles.
An obtuse triangle is a triangle that has one angle greater than 90 degrees.
In an obtuse triangle, there can be at most one set of perpendicular lines, which are the altitudes from the vertices to the opposite sides. Since one of the angles is greater than 90 degrees, the altitudes from the vertices opposite the obtuse angle will intersect the extension of the opposite side rather than the side itself. Therefore, while there are three altitudes, only one can be perpendicular to the side of the triangle.
An obtuse triangle is a triangle with one angle greater than 90 degrees. Since a perpendicular side is a side that forms a right angle with another side, an obtuse triangle can have 0 perpendicular sides if all its angles are obtuse. However, it can also have 1 perpendicular side if one of its angles is a right angle.
There can be only one pair of perpendicular lines in an isosceles triangle when it is a right angled isosceles triangle. A non right angled isosceles triangle has no pairs of perpendicular lines.
A right angle triangle has a pair of perpendicular lines that meet each other at 90 degrees.
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two if the triangle has a right angle
There are no parallel lines in any triangle but a right angle triangle has perpendicular line that meet each other at 90 degrees.
If it is a 45° 45° 90° isosceles right triangle, then there are 2 sides that are perpendicular.
Two
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Two.
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