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CIRCLES DEFINITIONSTRIANGLES ANGLESSEGMENTS
&LINES
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IT IS A CHORD THAT PASSES THROUGH THE CENTER OF THE CIRCLE
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WHAT IS A DIAMETER?
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HE FOUND A VALUE OF PI BYSURROUNDING A CIRCLE BY POLYGONS OF INCREASING
NUMBERS OF SIDES
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WHO WAS ARCHIMEDES?
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HE WAS THE LIBRARIAN OFALEXANDRIA. OH, YEAH, ANDHE DID A PRETTY GOOD JOB
OF MEASURING THE CIRCUMFERENCE OF THE
EARTH
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WHO IS ERATOSTHENES?
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THE DIAMETER OF A CIRCLE WITHA RADIUS OF 3
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A FIGURE HAVING 4 EQUAL SIDESAND 4 RIGHT ANGLES
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WHAT IS A SQUARE?
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THIS IS THE “FENCE” AROUND A POLYGON
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WHAT IS THE PERIMETER?
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A QUADRILATERAL WITH BOTH PAIRSOF OPPOSITE SIDES PARALLEL
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WHAT IS A PARALLELOGRAM?
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WHAT IS THE FORMULA FOR THE AREAOF A RECTANGLE OR SQUARE?
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A QUADRILATERALTHAT TALKS TOO MUCH
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WHAT IS SPONGE BOB SQUARE PANTS?
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THE SET OF ALL POINTS IN A PLANE THAT ARE A GIVEN DISTANCE FROM
A GIVEN POINT
(THINK ABOUT THIS ONE – IT ISN’T AS HARD AS IT SOUNDS!)
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WHAT IS A CIRCLE?
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A TRIANGLE WITH NO EQUAL SIDES
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WHAT IS A SCALENE TRIANGLE?
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IT IS THE SIDE OPPOSITE THE RIGHT ANGLE IN A RIGHT TRIANGLE
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WHAT IS THE HYPOTENUSE?
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A TRIANGLE WITH AT LEAST TWO EQUAL SIDES
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WHAT IS AN ISOSCELES TRIANGLE?
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THE MEASURE OF THE THIRD ANGLE OF A TRIANGLE CONTAINING ANGLES OF
50 AND 60 DEGREES
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WHAT IS 70 DEGREES?
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AS THE NUMBER OF ANGLES ONA POLYGON INCREASE,
IT APPROACHES, BUT NEVER QUITE REACHES, THIS SHAPE
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WHAT IS A CIRCLE?
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A point where two or more rays meet, where sides of a polygon meet, or where edges of a
polyhedron meet
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WHAT IS A VERTEX?
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WHAT IS THE FORMULA FOR THEAREA OF A TRIANGLE?
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THE DISTANCE FROM THE TOP OFTHE GREAT PYRAMID TO THE BASE
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WHAT IS THE ALTITUDE?
(Half credit forWhat is the Height?)
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TRIANGULAR, SQUARE, PENTAGONAL NUMBERS
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WHAT ARE FIGURATE NUMBERS?
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TWO TOOLS NECESSARY TO CONSTRUCT A PERFECT
RIGHT ANGLE
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WHAT IS A STRAIGHTEDGE AND COMPASS?OR
WHAT IS A STRAIGHTEDGE AND PROTRACTOR?
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A LINE WITH DEFINED BEGINNING AND END POINT
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WHAT IS A LINE SEGMENT?
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IT IS A SEGMENT THAT JOINS TWO POINTS ON A CIRCLE
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THESE LINES ARE IN THE SAME PLANEBUT WILL NEVER INTERSECT
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WHAT ARE PARALLEL LINES?
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THESE LINES INTERSECT ANDFORM EQUAL ANGLES ON ALL
FOUR SIDES OFTHE INTERSECTION
(HINT – TRY DRAWING TWO LINESTHAT MATCH THIS DESCRIPTION)
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WHAT ARE PERPENDICULAR LINES?
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A MYTH THAT IS STILLREPORTED REGARDING WHAT
ANCIENT PEOPLE WHOLIVED BEFORE CHRISTOPHERCOLUMBUS’ TIME BELIEVED
ABOUT THE EARTH
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WHAT IS “THE EARTH IS FLAT”?OR
WHAT IS “THE SUN REVOLVES AROUNDTHE EARTH?”