LEARN · EXPLAIN · REVISE
Equations of lines and circles
Read the idea, work independently, then explain what changed.
Each section contains concept explanations, three worked examples, ten graded exercises and teacher preparation.
2.1
Take the 15-question mixed assessment ↗Inclination and slope of a line
Connect slope, inclination and parallel/perpendicular directions, including vertical lines.
2.2Equations of a line
Choose point-slope, two-point, intercept or general form without losing exceptional lines.
2.3Intersections and distance formulas
Solve intersections and calculate point-line and parallel-line distances with geometric checks.
2.4Equations of a circle
Construct circle equations from centers, radii, diameters and point constraints.
2.5Relations between lines and circles
Classify intersection and tangency using distances, discriminants and common chords.