Not necessarily. It is a plane shape which could be horizontal.
A right-angle triangle.
A three-sided shape with one pair of perpendicular lines is called a right triangle. In a right triangle, one angle is a right angle (90 degrees), which means that one pair of sides are perpendicular to each other. The other two angles are acute, measuring less than 90 degrees. The Pythagorean theorem can be used to find the lengths of the sides of a right triangle.
Im pretty sure that's a right triangle.
a triangle, pentagon and that's all i can think of * * * * * A right angled triangle has a pair of perpendicular lines! Likewise, a pentagon can have a pair. A circle, ellipse etc do not.
A triangle can have one angle made up of perpendicular lines. That would be called a right triangle. A triangle cannot have more than one angle made up of perpendicular lines however. To see why, remember that an angle created by two perpendicular lines is 90 degrees and a triangle is made up of three angles that sum to 180 degrees. If two angles were 90 degrees the third angle would have to be 0 degrees, in which case the shape is no longer a triangle.
If you have a triangle then one of the sides cannot be perpendicular to the other two. It is true for a square but it is impossible with a triangle. Definition of perpendicular: Being at right angles to the horizontal; vertical.
No
yes it can, this is called a right triangle.
1/2*base of triangle*height(the perpendicular)=Area of right angled triangle
two if the triangle has a right angle
A right triangle in a plane is one in which one of the three angles is a right angle. It is obious that the two sides, making up the right angle, must be perpendicular. In symbols, if triangle ABC is a right triangle with angle B as the right angle, then the sides AB and BC are perpendicular.
They are perpendicular.