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Geometry
Shapes, measured. Give three sides and get every angle, the area and a drawn figure; give a radius and get a sphere you can spin. Coordinate geometry connects it all to algebra.
ਪਾਠ
Core
Triangles
Heron's formula, the law of cosines and classifying triangles.
triangle 3 4 5
Introductory
Pythagorean theorem
a² + b² = c² in a right triangle, and where it comes from.
hypotenuse of 3 and 4
Introductory
Circles
Circumference, area and the meaning of π.
circle radius 2
Core
Polygons
Interior angles, apothem and area of regular polygons.
hexagon side 2
Core
Solids
Volume and surface area of spheres, cylinders, cones, boxes and pyramids.
volume of a sphere with radius 3
Core
Coordinate geometry
Distance, midpoint, slope and the equation of a line.
line through (0,1) and (2,5)
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