What is the base of a triangle?
A triangle is defined as a two-dimensional shape that has three sides and three angles.
Answer: The bottom line of a triangle is the base of the triangle, it can be one of the three sides of the triangle.
In a triangle, one side is a base side and the remaining two sides can height or hypotenuse side.
Let's draw a diagram of a triangle
RQ is the base of the triangle
PQ and PR are the remaining two sides.