🧮 AMC 8 Study Wiki

Topic guides with instructor tips, worked examples, and real-exam practice — built for Daisy's AMC 8 prep.

275 real exam problems (2015–2026)
17 topic lessons
123 exam figures
216 worked examples mapped to lessons

📐 Geometry

Lecture 01

Angles & Triangles live

Angle chasing, triangle angle sums, congruence — and when SSA lies to you.

Lecture 02

Pythagorean Theorem live

Triples to memorize, 45-45-90 & 30-60-90 shortcuts, animated proofs, 23 problems with printable PDF.

Lecture 03

Similar Triangles live

Spotting similar pairs, ratio ladders, and areas that scale with the square.

Lecture 04

Circles live

Radii, chords, and tangents; shaded-region areas built from sectors and triangles.

Lecture 05

Perimeter, Area, Volume live

Composite figures, area two-ways, painted cubes, and unfolding 3-D shapes.

Lecture 06

Lines live

Coordinates, slopes, midpoints, and intersections on the grid.

🔢 Algebra & Sequences

Lecture 07

Solving Equations live

Turning word problems into equations — the biggest lesson in the course (31 worked examples).

Lecture 08

Powers & Radicals live

Exponent rules, perfect squares, and taming square roots.

Lecture 10

Sequences & Series live

Arithmetic patterns, term formulas, and fast sums.

Lecture 11

Inequalities live

Solving and estimating with inequalities; bounding answers before computing.

Lecture 16

Diophantine Equations live

Integer-solution puzzles: coin problems, stamp problems, and systematic search.

🔍 Number Theory

Lecture 15

Primes live

Prime factorization, counting divisors, and factor tricks.

Lecture 17

Remainders & Divisibility live

Divisibility rules, remainder cycles, and units-digit patterns.

🎲 Counting & Probability

Lecture 12

Permutations & Combinations live

When order matters and when it doesn't; handshakes, committees, and arrangements.

Lecture 13

Advanced Counting Models live

Lattice paths, complementary counting, and casework that stays organized.

Lecture 14

Probability live

Dice, spinners, and drawing without replacement — counting your way to the answer.

🧠 Logic & Data

Lecture 09

Logic & Data Analysis live

Reading charts, averages and medians, and logic-grid deduction.

🛠 Tools

Problem Bank Browser

Every real AMC 8 exam 2015–2026 — 275 problems with figures, filter by year, answers on click.

Printable worksheets

Each live topic has a print-ready PDF with the answer key at the back (one per topic, 17 total).