20 Experiments

• Classification of angles

• Angle measurement

• A few Greek letters

• Angles on lines

• Angles on parallel lines

• Special triangles

• Special quadrilaterals

• Symmetric quadrilaterals

• The sum of angles in a triangle

• Thales’s theorem

• Area measurement

• The area of a kite

• The area of a parallelogram

• The trapezoid and its area

• The area of a triangle

• The Pythagorean theorem

• Euclid’s altitude theorem

• Euclid’s cathetus theorem

• The intercept theorem

• Tirgonometric functions in right angled triangles