Transcribed

## The Complete Guide to Geometric Shapes

THE COMPLETE GUIDE TO GEOMETRIC SHAPES LSIDE ANGLE MONOGON CIRCLE SINGLE VERTEX WITH ONE 360 ARC EDGE CLOSED CURVE IN A PLANE THAT RESEMBLES AN OVAL ELLIPSE DIGON A PAIR OF 180° ARCS CONNECTING TO CIRCLE CREATE A ROUNDED SHAPE (Or OVAL) TRIANGLE 31 31 THE SUM OF THE INTERIOR ANGLES OF A TRIANGLE ALWAYS EQUALS 180° EQUILATERAL ALL SIDES ARE EQUAL LENGTH 600 TRIANGLE (AKA REGULAR TRIANGLE) 600 60° ALL ANGLES MEASURE 60° TWO SIDES OF EQUAL LENGTH ISOSCELES TRIANGLE TWO ANGLES OF SAME MEASURE NO EQUAL SIDES SCALENE TRIANGLE ALL ANGLES OF DIFFERENT MEASURE RIGHT ONE RIGHT ANGLE (EQUAL TO 90°) TRIANGLE ONE OB TUSE ANGLE (GREATER THAN 90') AND TWO ACUTE ANGLES (LESS THAN 90") OBTUSE TRIANGLE b900 ACUTE ALL THREE ANGLES ARE ACUTE (LESS THAN 90") TRIANGLE THE SUM OF THE INTERIOR ANGLES QUADRILATERAL 4 44 OF A QUADRILATERAL ALWAYS EQUALS 360" ALL SIDES ARE EQUAL LENGTH SQUARE ALL RIGHT ANGLES, EACH EQUALS 90° OPPOSING SIDES ARE EQUAL RECTANGLE ALL RIGHT ANGLES, EACH EQUALS 90° TWO PAIRS OF PARALLEL SIDES; OPPOSING SIDES ARE OF EQUAL LENGTH PARALLELOGRAM ÕPPOSING ANGLES ARE OF EQUAL MEASURE ALL SIDES ARE EQUAL LENGTH RHOMBUS OPPOSING ANGLES ARE OF EQUAL MEASURE NO EQUAL SIDES; ONLY TWO SIDES ARE PARALLEL TRAPEZOID NO EQUAL ANGLES TWO SIDES ARE EQUAL LENGTH; THE OTHER TWO SIDES ARE PARALLEL ISOSCELES TRAPEZOID THE BASE ANGLES ARE EQUAL NO EQUAL SIDES; NO SIDES ARE PARALLEL TRAPEZIUM NO EQUAL ANGLES TWO PAIRS OF EQUAL-LENGTH SIDES THAT ARE KITE ADJACENT TO EACH OTHER THE TWO INTERIOR ANGLES THAT ARE ON OPPOSITE SIDES OF THE SYMMETRY AXIS ARE EQUAL 5A PENTAGON FIVE-SIDED POLYGON REGULAR THE SUM OF THE INTERIOR ANGLES EQUALS 540° PENTAGON EACH ANGLE EQUALS 108° HEXAGON SIX-SIDED POLYGON REGULAR THE SUM OF THE INTERIOR.ANGLES EQUALS 720° HEXAGON EACH ANGLE EQUALS 120' HEPTAGON SEVEN-SIDED POLYGON REGULAR HEPTAGON THE SUM OF THE INTERIOR ANGLES EQUALS 900 EACH ANGLE EQUALS 128.57 OCTAGON 8L 81 EIGHT-SIDED POLYGON REGULAR OCTAGON THE SUM OF THE INTERIOR ANGLES EQUALS 1080° EACH ANGLE EQUALS 135 91 91 NONAGON NINE-SIDED POLYGON REGULAR NONAGON THE SUM OF THE INTERIOR ANGLES EQUALS 1260 EACH ANGLE EQUALS 140° DECAGON 10L 101 TEN-SIDED POLYGON REGULAR DECAGON THE SUM OF THE INTERIOR ANGLES EQUALS 1440° EACH ANGLE EQUALS 144° 11 111 HENDECAGON ELEVEN-SIDED POLYGON REGULAR HENDECAGON THE SUM OF THE INTERIOR ANGLES EQUALS 1620° EACH ANGLE EQUALS 147.27° DODECAGON 12L 12 TWELVE-SIDED POLYGON REGULAR DODECAGON THE SUM OF THE INTERIOR ANGLES EQUALS 1800° EACH ANGLE EQUALS 150' 13 134 TRIDECAGON REGULAR THIRTEEN-SIDED POLYGON TRIDECAGON THE SUM OF THE INTERIOR ANGLES EQUALS 1980° EACH ANGLE EQUALS 152.31 TETRADECAGON 141 144 FOURTEEN-SIDED POLYGON THE SUM OF THE INTERIOR ANGLES EQUALS 2160° EACH ANGLE EQUALS 154.29* REGULAR TETRADECAGON PENTADECAGON 15L 15.1 FIFTEEN-SIDED POLYGON REGULAR THE SUM OF THE INTERIOR ANGLES EQUALS 2340° PENTADECAGON EACH ANGLE EQUALS 156° 161 161 HEXADECAGON SIXTEEN-SIDED POLYGON REGULAR THE SUM OFE THE INTERIOR ANGLES EQUALS 2520' HEXADECAGON EACH ANGLE EQUALS 157.5 HEPTADECAGON 17L 174 SEVENTEEN-SIDED POLYGON REGULAR THE SUM OF THE INTERIOR ANGLES EQUALS 2700° HEPTADECAGON EACH ANGLE EQUALS 158.82* OCTADECAGON 181 18 EIGHTEEN-SIDED POLYGON REGULAR THE SUM OF THE INTERIOR ANGLES EQUALS 2880 OCTADECAGON EACH ANGLE EQUALS 160' 19 191 ENNEADECAGON NINETEEN-SIDED POLYGON REGULAR THE SUM OF THE INTERIOR ANGLES EQUALS 3040° ENNEADECAGON EACH ANGLE EQUALS 161.05° 201 20 ICOSAGON REGULAR TWENTY-SIDED POLYGON ICOSAGON THE SUM OF THE INTERIOR ANGLES EQUALS 3240° EACH ANGLE EQUALS 162 10 COMMON POLYHEDRONS OFACES EDGES VERTICES CUBE CUBOID SPHERE ELLIPSOID CYLINDER 6 回 12 0 8 包 2 OR 3 D O OR 2 0 0 印 O OR 10 O OR 10 12 0 CONE TRIANGULAR PRISM TRIANGULAR- BASED SQUARE- HEXAGONAL BASED PRISM 1 OR 2 0 O OR 10 1 (APEX)O PYRAMID PYRAMID 40 6 回 8 口 18 0 12 包 5 0 5 回 PLEASE NOTE THAT THERE IS SOME DISAGREEMENT BETWEEN MATHEMATICIANS ON WHETHER TO ALLO W A FACE OR EDGE TO BE CURVED. SOURCES: HTTPS://EN.WIKIPEDIA.ORG/WIKI/LIST_OF_TWO-DIMENSIONAL_GEOMETRIC_SHAPES HTTPS://WWWMATH-SALAMANDERS.COM/LIST-OF-GEOMETRIC-SHAPES.HTML #CURVED HTTP://MATHFORUM.ORG/LIBRARY/DRMATH/VIEW/64540.HTML AAA STATE OF PLAY

# The Complete Guide to Geometric Shapes

shared by SylviaP on May 18
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This online math resource is a great tool to learn the names of shapes and all about their sides and angles.

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