16 
Drag the items on the right into the middle to match with the items on the left.
4 sides:
4 sides, 4 right angles:
4 equal sides:
4 equal sides, 4 right angles:
5 sides:
6 sides:
7 sides:
8 sides:
9 sides:
10 sides:
difference in direction between 2 lines:
90°
3 sides
triangle with 3 equal sides
triangle with 2 sides the same length
triangle with one right angle
quadrilateral
rectangle
rhombus
square
pentagon
hexagon
heptagon
octagon
nonagon
decagon
angle
right angle
triangle
equilateral triangle
isosceles triangle
right angle triangle

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