Geometry

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In order of increasing difficulty (approximately).

Everything

36 1201 1057 1180 5 2383 1062 2368 1366 1424 1502 2192 1017 1003 1582 2352 922 2055 2178 1203 1162 1144 2353 2326 1082 1091 65 1813 2302 2275 2281 66 2263 2332 1364 1 2182 2177 1812 1795 1518 1015 1050 1088 1089 1134 2208 884 56 63 69 263 294 348 1073 577 682 471 855 885 982 1019 1038 1136 1452 531 669 684 570 122 201 247 608 335 623 406 635 424 486 459 652 516 532 595 609 667 2066 745 783 789 835 2047 988 1009 1007 2092 724 1070 731 2131 2133 2139 2130 2137 2142 2132 2141 1191 2155 1195 2163 1228 2171 2184 2185 92 2195 1368 1954 2101 2360 2226 2230 2232 1585 1670 2276 1785 2305 2308 2303 2333 1887 2348 1951 2339 1971 2042 2354 1137 1602 1215 760 925 927 1405 1426 1427 1464 1484 1504 1507 1520 1538 1584 1624 1648 1668 1690 1748 1750 1870 1929 1968 1986 1988 2029 2033 2043 2085 2086 2093 2103 2136 2156 2162 2179 2186 2194 2197 2198 2231 983 986 2310 2327 108 273 369 384 426 2203 874 477 151 1628 463 1908 1390 1415 1559 64 2221 152 1692 1766 79 2235 1609 1610 1630 1631 1786 1713 2271 1788 1770 1791 1837 508 133 1859 123 180 191 224 257 2335 250 374 296 1937 358 658 311 690 1936 1909 372 386 629 387 434 410 1932 100 431 446 447 275 2015 528 529 527 535 492 557 566 584 748 765 750 776 792 2274 840 821 824 837 2049 791 813 2060 1992 2074 967 968 355 910 356 1411 2320 946 908 1098 736 2125 945 965 1332 1392 2096 12 2114 1467 1468 1173 2115 464 872 2120 2165 1250 248 2173 435 199 207 226 553 729 482 228 240 242 796 554 568 253 575 333 260 271 436 287 693 830 587 662 303 468 93 600 616 422 619 378 331 451 346 94 95 91 209 345 632 360 634 647 393 646 290 705 721 403 723 60 421 728 169 320 439 808 753 496 722 678 815 214 483 663 499 514 615 243 227 512 540 768 782 770 829 118 139 155 706 185 779 200

30 60 90 triangles

1366 789

AM-GM

2096

Angle bisector theorem

684 609 2348

Area

2368 66 63 855 486 426 64 79

Assign variables

595 731 792

Assign variables write equations

577 855 988 731 2130 92 2195 535

Basic

2066

Bouncing

260

Circles

508 690 776 840 791

Circumcircles

690

Clever

570

Complex numbers

1937

Congruent triangles

609 436

Construct the diagram

792

Coordinates

514

Coordinatize

63 789 64 451

Cutting

2360

Cyclic quadrilaterals

690 540

D = RT

345

Draw horizontal and vertical lines

63 2354 64

Drawing the diagram

835

Ellipses

12 60

Equal tangents

566

Equilateral triangles

2130

Extend a line

2354

Folding

736

GCD/LCM

69

Geometric optimization

5

Geometric probability

652 1411 945 464 435

Geometric series

835

Graph theory

723 722

Heron's Formula

1 2348

Incircles

372 566

Inequality constraints

584

Lattice points

69

Law of Cosines

434 540

Law of Sines

434

Length chasing

595 792

Locus

459

Logs

532

Mass points

684

Notation

835

Organize the count by the right variable

1908

Overlapping area

66 335

Pentagons

56

Physical

2360 477 629 736 568 260 468 345

Point-line distance

514

Power of a point

840

Projection

2383

Ptolemy

840

Pythagoras

2130

Right angles

792

Rolling

568

Roots of unity

632

Scaling

2130 658

Scan the diagram

609

Shoelace

2303

Sigma notation

835

Similar triangles

36 577 608 595 609 835 2101 2348 2354 658 792 840 813 908 60 540

Skews

12

Slope

60

Stewart's Theorem

840

Tangency

65 635 508 2335 776 60

Transformations

60

Triangle Area Formulas

690 540

Triangle inequality

435

Triangles

1366 669 684 789 690 372 566 840 451

Trig

745 535

Vectors

2383

Not Classified Yet

1201 1057 1180 1062 1424 1502 2192 1017 1003 1582 2352 922 2055 2178 1203 1162 1144 2353 2326 1082 1091 1813 2302 2275 2281 2263 2332 1364 2182 2177 1812 1795 1518 1015 1050 1088 1089 1134 2208 884 263 294 348 1073 682 471 885 982 1019 1038 1136 1452 531 122 201 247 623 406 424 516 667 783 2047 1009 1007 2092 724 1070 2131 2133 2139 2137 2142 2132 2141 1191 2155 1195 2163 1228 2171 2184 2185 1368 1954 2226 2230 2232 1585 1670 2276 1785 2305 2308 2333 1887 1951 2339 1971 2042 1137 1602 1215 760 925 927 1405 1426 1427 1464 1484 1504 1507 1520 1538 1584 1624 1648 1668 1690 1748 1750 1870 1929 1968 1986 1988 2029 2033 2043 2085 2086 2093 2103 2136 2156 2162 2179 2186 2194 2197 2198 2231 983 986 2310 2327 108 273 369 384 2203 874 151 1628 463 1390 1415 1559 2221 152 1692 1766 2235 1609 1610 1630 1631 1786 1713 2271 1788 1770 1791 1837 133 1859 123 180 191 224 257 250 374 296 358 311 1936 1909 386 387 410 1932 100 431 446 447 275 2015 528 529 527 492 557 748 765 750 2274 821 824 837 2049 2060 1992 2074 967 968 355 910 356 2320 946 1098 2125 965 1332 1392 2114 1467 1468 1173 2115 872 2120 2165 1250 248 2173 199 207 226 553 729 482 228 240 242 796 554 253 575 333 271 287 693 830 587 662 303 93 600 616 422 619 378 331 346 94 95 91 209 360 634 647 393 646 290 705 721 403 421 728 169 320 439 808 753 496 678 815 214 483 663 499 615 243 227 512 768 782 770 829 118 139 155 706 185 779 200

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