It is a 3 sided shape with 3 interior angles that add up to 180 degrees
No because the interior angles of a four sided shape can't exceed 360 degrees.
There is no such shape because shapes or polygons must have 3 or more sides and there are 3 interior angles in a 3 sided polygon which is a triangle that add up to 180 degrees.
The 3 interior angles of a triangle add up to 180 degrees
180
2 or 3 dimensional?
It is a 3 sided shape with 3 interior angles that add up to 180 degrees
There are 3 lines of symmetry ina 6-sided shape.
that is a square with a triangle inside turned
The three internal angles add up to 180 degrees.
No because the interior angles of a four sided shape can't exceed 360 degrees.
There is no such shape because shapes or polygons must have 3 or more sides and there are 3 interior angles in a 3 sided polygon which is a triangle that add up to 180 degrees.
The 3 interior angles of a triangle add up to 180 degrees
180
to calculate this, you must find out how many triangles you can draw in to the shape. do this by picking an angle. draw a line to all of the other angles. (for a 12 sided, there would be 9, subtract 3 from any shape to see.) mutiply the number of triangles by 180 degrees. this should be the degrees of the shape. for a 12 sider, the answer would be 1620 degrees.
A 3 sided shape is a triangle. A 4 sided shape could be a square or rectangle.
If you mean a "triangle" it is a 3 sided shape with interior angles adding to 180 degrees and exterior adding to 360 degrees.