Download File - 6th Grade Math

GEOMETRY TERMS
POINT—A SINGLE LOCATION OR POSITION
LINE—A NEVER ENDING STRAIGHT PATH THAT EXTENDS IN BOTH DIRECTIONS
RAY--PART OF A LINE, HAS ONE ENDPOINT AND EXTENDS IN THE OTHER DIRECTION
(LINE) SEGMENT--PART OF A LINE BETWEEN TWO ENDPOINTS
INTERSECTING LINES--LINES THAT MEET OR CROSS
PARALLEL LINES-- LINES THAT WILL NEVER MEET OR CROSS
PERPENDICULAR LINES-- LINES THAT MEET TO FORM RIGHT ANGLES
PLANE--SET OF ALL POINTS ON A FLAT SURFACE
INTERSECTING PLANES--PLANES THAT MEET OR CROSS
PARALLEL PLANES--PLANES THAT WILL NOT MEET OR CROSS
PERPENDICULAR PLANES--PLANES THAT MEET TO FORM RIGHT ANGLES
ANGLE--FORMED WHEN TWO RAYS HAVE A COMMON ENDPOINT
VERTEX--POINT WHERE TWO OR MORE LINES MEET
ACUTE ANGLE--ANGLE THAT MEASURES LESS THAN 90 DEGREES
RIGHT ANGLE—ANGLE THAT MEASURES 90 DEGREES
OBTUSE ANGLE- ANGLE THAT MEASURES BETWEEN 90 –180 DEGREES
STRAIGHT LINE—MEASURES 180 DEGREES
COMPLEMENTARY ANGLES—TWO ANGLES WITH A SUM IS 90 DEGREES
SUPPLEMENTARY ANGLES—TWO ANGLES WITH A SUM OF 180 DEGREES
CONGRUENT ANGLES—ANGLES THAT HAVE THE SAME MEASURE
POLYGON-TWO DIMENSIONAL SHAPE MADE UP OF 3 OR MORE JOINED SEGMENTS
TRIANGLE—THREE SIDES/THREE ANGLES
SCALENE TRIANGLE--NO CONGRUENT SIDES NO CONGRUENT ANGLES
(NOTHING EQUAL)
ISOSCELES TRIANGLE-TWO EQUAL SIDES/TWO EQUAL ANGLES
EQUILATERAL TRIANGLE-THREE EQUAL SIDES/THREE EQUAL ANGLES
RIGHT TRIANGLE-HAS ONE RIGHT ANGLE
ACUTE TRIANGLE-ALL ANGLES MEASURE LESS THAN 90 DEGREES
OBTUSE TRIANGLE—HAS ONE ANGLE GREATER THAN 90 DEGREES
QUADRILATERAL-FOUR SIDES/FOUR ANGLES
PARALLELOGRAM-QUADRILATERAL W/2 PAIRS OF PARALLEL LINES
TRAPEZOID-QUADRILATERAL W/ ONE PAIR OF PARALLEL LINES
RECTANGLE-PARALLELOGRAM W/ FOUR RIGHT ANGLES
RHOMBUS-PARALLELOGRAM W/FOUR EQUAL SIDES
SQUARE-RECTANGLE W/FOUR EQUAL SIDES
PENTAGON-FIVE SIDES/FIVE ANGLES
HEXAGON-SIX SIDES/SIX ANGLES
OCTAGON-EIGHT SIDES/EIGHT ANGLES
RADIUS-SEGMENT FROM CENTER OF CIRCLE TO EDGE OF CIRCLE
DIAMETER-SEGMENT THAT CUTS THE CIRCLE IN HALF
CIRCUMFERENCE-DISTANCE AROUND THE OUTSIDE OF THE CIRCLE
THE SUM OF THE ANGLES OF A TRIANGLE IS 180 DEGREES
THE SUM OF THE ANGLES OF A QUADRILATERAL IS 360 DEGREES
FORMULAS
PERIMETER--ADD UP ALL SIDES
RADIUS--DIAMETER DIVIDED BY 2
DIAMETER--RADIUS TIMES 2
CIRCUMFERENCE--DIAMETER TIMES PI
AREA OF RIGHT TRIANGLE--ONE HALF BASE TIMES HEIGHT
AREA OF SQUARE/RECTANGLE—LENGTH TIMES WIDTH
AREA OF PARALLELOGRAM--BASE TIMES HEIGHT
AREA OF TRAPEZOID—ONE HALF TIMES HEIGHT TIMES (BASE 1 PLUS BASE 2)
AREA OF CIRCLE—PI TIMES R SQUARED
AREA OF SECTOR-DEGREE OF SECTOR OVER 360 TIMES PI TIMES R SQUARE
SURFACE AREA OF PRISM-PERIMETER OF THE BASE TIMES HEIGHT PLUS 2 TIMES
AREA OF BASE
SURFACE AREA OF CYLINDER—TWO TIMES PI TIMES RADIUS OF BASE TIMES HEIGHT
PLUS TWO TIMES PI TIMES R SQUARED
SURFACE AREA OF PYRAMID—ONE HALF TIMES PERIMETER OF BASE TIMES SLANT
PLUS AREA OF THE BASE
VOLUME OF PRISM—LENGTH TIMES WIDTH TIMES HEIGHT
VOLUME OF CYLINDER—PI TIMES RADIUS OF BASE SQUARED TIMES HEIGHT
VOLUME OF PYRAMID—ONE THIRD TIMES AREA OF BASE TIMES HEIGHT
PI=3.14