Draw some quadrilaterals on a 9-point circle and work out the angles. Is there a theorem?
More Logo for beginners. Learn to calculate exterior angles and draw regular polygons using procedures and variables.
Turn through bigger angles and draw stars with Logo.
Follow instructions to fold sheets of A4 paper into pentagons and assemble them to form a dodecahedron. Calculate the error in the angle of the not perfectly regular pentagons you make.
Why does this fold create an angle of sixty degrees?
Is it possible to find the angles in this rather special isosceles triangle?
Given an equilateral triangle inside an isosceles triangle, can you find a relationship between the angles?
An equilateral triangle rotates around regular polygons and produces an outline like a flower. What are the perimeters of the different flowers?
Given a regular pentagon, can you find the distance between two non-adjacent vertices?
