60°
8
hexagon
Explanation:a) An equilateral triangle has 3 sides and 3 angles equal.
The sum of angles in a triangle is 180 degrees.
let each angle = x
3 angles = 3(x)
3x = 180
x = 180/3
x = 60°
Hence, the measure of each angle in an equilateral triangle is 60°.
b) Considering the options, the highest is 8. Starting from a quadrilateral(4) to a polygon, we can fit certain numbers of triangles in one vertex.
8 numbers can fit together at one vertex (no space between the triangles)
c) When 6 triangles are fit together in one vertex, the outside shape:
The shape is an hexagon
