Q:
# Can a triangle have two perpendicular sides?

**A triangle can have two perpendicular sides.** If two sides are perpendicular, the angle they form is a right angle. A triangle can have only one right angle.

Credit:
Stockbyte
Stockbyte
Getty Images

A triangle cannot have two sides perpendicular to a third side. The sum of the three angles of a triangle is exactly 180 degrees. It must have three sides and three angles. Thus, it cannot have two angles whose sum comes to 180 degrees.

In a right triangle, two sides are always perpendicular. The measurements of these sides are used to calculate the area of a right triangle. In an acute or an obtuse triangle, no two sides are perpendicular.

Learn more about Trigonometry-
Q:
## When was trigonometry invented?

A: Ancient Egyptian and Greek philosophers used an early form of trigonometry that involved calculating chords to obtain the angles of a triangle. This method... Full Answer >Filed Under: -
Q:
## How do you find the cos inverse?

A: The basic trigonometric functions sine, cosine, and tangent give the ratio between two sides of a triangle with a given angle. The inverse trig functions f... Full Answer >Filed Under: -
Q:
## How do you find the tangent?

A: Find the tangent by dividing the length of the opposite side of a right triangle by the length of its adjacent side. The result of this equation is the tan... Full Answer >Filed Under: -
Q:
## What are the side lengths of an isosceles triangle?

A: An isosceles triangle has two side lengths that are equal and a remaining side that is of a different length. The two interior angles that are opposite the... Full Answer >Filed Under: