Unit 2
Geometry and Trigonometry
Geometry and Trigonometry
MYP subject group objective(s)
A: Knowing and understanding
i. select appropriate mathematics when solving problems in both familiar and unfamiliar situations
ii. apply the selected mathematics successfully when solving problems
iii. solve problems correctly in a variety of contexts
Skills
Geometry:
Angles with parallel lines
Angles in polygons
Constructions of angle bisectors, perpendicular bisector, circumcircle etc.
Practical examples leading to constructions including more complex loci problems
Constructions of triangles (SAS, SSS, RHS, SSA leading to the ambiguous case)
Trigonometry:
Finding unknown sides using Pythagoras' theorem
Conditions of similarity and congruence
Finding unknown sides using similar triangles
Derivation of trigonometric ratios using similar triangles
Right angled trigonometry in 2 dimensions
Distance between points, midpoints and angles between lines on the coordinate grid
Angles of elevation and depression, bearings
Transformations:
Reflection given equation of line
Finding line of reflection given object and image
Rotation given centre of rotation and angle
Finding centre of rotation given object and image
Positive whole number enlargements
Translations
Area and volume:
Area of rectilinear shapes and circles
Volume of prisms, spheres, cones, pyramids and further standard solids
Density
Dimensions - understanding which formulae lead to length, area and volume
Extension (set 1-2): Right angled trigonometry in 3 dimensions and the 3 dimensional coordinate grid Sine and cosine rule and sine rule for area of triangle Proof of similarity and congruence Negative and fractional enlargement If time allows. Set 1: Trigonometric graphs, period, amplitude Trigonometric equations, the Unit Circle Radian Measurement, Length of Arc and Area of Sector