9 (two less than the number of vertices in the polygon).
3
4
A polygon is a plane figure bounded by a finite number of straight lines. To enclose an area then a minimum of three straight lines are required. All triangles, not just isosceles triangles, are polygons.
3
There are 4 triangles in a 6 sided hexagon
A minimum of 2 triangles are needed, but you can also make a rectangle with 3 or more triangles.
There are two ways to think of this question, if the triangles don't have to intersect then the answer is zero. If the triangles have to intersect, then the minimum number of points is one, if the triangles meat at vertex to edge or vertex to vertex.
The minimum number of seismographs needed to locate an epicenter of an earthquake is 3.
9 (two less than the number of vertices in the polygon).
The minimum number of seismic stations needed to determine the location of an earthquake's epicenter is THREE.
A trapezium has 4 sides
The minimum number of seismic stations needed to determine the location of an earthquake's epicenter is THREE.
The minimum number of seismic stations needed to determine the location of an earthquake's epicenter is THREE.
The minimum number of seismic stations needed to determine the location of an earthquake's epicenter is THREE.
3
270 electoral votes are needed to win the presidency.