คำแปล ความหมาย ของ "triangle" ที่ค้นพบ

It is hard to define "triangle."

We encounter similar difficulties when we substitute rectangles for triangles in this configuration.

For example, Pepperberg would show Alex an object, such as a green wooden peg or a red paper triangle.

Please find the area of the triangle.

The sum of all the angles in a triangle equals 180 degrees.