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Exterior angles of both polygons add up to 360 degrees
180 which is half of what a square is. A square is 360.
2 triangles make up a rhombus which has 4 interior angles adding to 360 degrees and a triangles has 3 interior angles add up to 180 degrees. Therefore: 360/180 = 2 triangles
Triangles are joined together by 3 line segments Triangles have 3 interior angles that add up to 180 degrees Triangles have 3 exterior angles that add up to 360 degrees Triangles have no diagonals Triangles will tessellate Triangles can be scalene, obtuse, right angle, isosceles or equilateral Triangles have a perimeter which is the sum of their 3 sides
Triangles have 3 sides and 3 interior angles that add up to 180 degrees Quadrilaterals have 4 sides and 4 interior angles that add up to 360 degrees