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What is a line?
What is a circle?
What is a triangle?
What is a quadrilateral?
(Square, rectangle etc.)
What is a pentagon?
What is a hexagon?
What is an octagon?
Tricks with compasses and straightedge
Divide a line in half (bisect a line) without a ruler.
Divide a line in 3 (trisect) without measuring.
Divide an angle in half.
Draw a line perpendicular to another line
Draw a line perpendicular to the end of a line.
Draw a square with a straightedge and compasses.
Draw a square method 2
Draw a square inside a circle
Draw a square outside a circle.
Find the centre of a circle
Draw a parallelogram
Divide a square in 4 equal squares
Divide a square in 25 (5X5) using a straightedge.
How to divide a square into nine squares (like a sudoku square)
Draw a perfect (regular) pentagon
Draw a hexagom
Draw a perfect octagon
Geometry:
using only compasses and straightedge
Tricks with straightedge and compasses.