If you take two triangles, turn one over and bring them together, they will form a parallelogram. Lots of parallelograms can be lined up to form a strip of uniform width. Lots of parallel strips will fill an area. Tessellation!
Chat with our AI personalities
An obtuse triangle does not always have three congruent sides. An obtuse triangle can be any form that always has three angles.
The three angles of a triangle are always equal to 180°, if not equal to 180° then it is not a triangle.
In a triangle the smallest angle is always opposite the shortest side. It will always be an acute angle.
Never
The sum of the three angles of a triangle is always 180º