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1 Perimeter of a circle is its circumference

2 Pi is the value of a circle's circumference divided by its diameter

3 Polygon has many sides

4 Pentagon is an example of a 5 sided polygon

5 Polyhedron has many faces and edges

6 Pyramid is an example of a polyhedron

7 Prism is a 3D shape with a unified cross-section

8 Parallelogram is a 4 sided quadrilateral

9 Perpendicular lines intersect each other at right angles

10 Parallel lines remain equidistant apart

11 Pythagoras' theorem is applicable to right angle triangles

12 Point of origin is at (0, 0) on the Cartesian plane where the x and y axes intersect each other at right angles

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11y ago

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