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If you mean what type of triangle has perpendicular lines then it is right angle triangle.
A triangle can have only three sides. No triangle can have 9 sides!
By definition, a parallelogram two separate pairs has parallel sides. The only type of parallelogram that has perpendicular sides is a rectangle. All others have non-perpendicular sides.
The triangle that has sides of different length is called a scalene triangle.
It is an equilateral triangle that has 3 congruent sides
A`isoseles duhhh
A right triangle.
an iscoceles triangle
By using a pair of compasses or depending on what type of triangle it is creating a perpendicular line from one of its vertices to its opposite side.
a right triangle
If you mean what type of triangle has perpendicular lines then it is right angle triangle.
A triangle can have only three sides. No triangle can have 9 sides!
This type of triangle is a scalene triangle
equilateral triangle
3 sides - such is the definition of triangle. Every triangle of any type has three sides.
By definition, a parallelogram two separate pairs has parallel sides. The only type of parallelogram that has perpendicular sides is a rectangle. All others have non-perpendicular sides.
what type of triangle has tree congruent sides