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### 21 Cards in this Set

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 WHAT ARE UNDEFINED TERMS? SO BASIC THAY CANNOT BE DEFINED, BUT CAN BE DESCRIBED SUCH AS: POINT, LINE AND PLANE. POINT AN UNDEFINED TERM. A SPECIFIC PLACE IN SPACE. NO DIMENSION,LENGTH,WIDTH,OR DEPTH. DOT ON PAPER WITH SINGLE CAPITAL LETTER LINE SET OF CONTINUOUS POINTS THAT EXTEND INDEFINITELY IN EITHER DIRECTION. ALWAYS REFERS TO A STRAIGHT LINE. TWO-ENDED ARROW OVER LETTERS TELLS YOU THAT THE LETTERS ARE DESCRIBING A LINE. PLANE A FLAT SURFACE THAT EXTENDS INFINITELY IN ALL DIRECTIONS. A FOUR SIDED FIGURE. DEFINED TERMS BASIC TERMS THAY CAN BE DEFINED, SUCH AS: RAY, OPPOSITE RAYS, PARALLEL LINES, ETC. LINE SEGMENT PART OF A LINE WITH TWO ENDPOINTS. TWO LETTERS WITH A BAR OVER THEM TO INDICATE A LINE SEGMENT RAY ONE ENDPOINT THAT EXTENDS INFINITELY IN THE OTHER DIRECTION. A SMALL ARROW ON TOP OF THE TWO LETTERS SHOULD SHOW DIRECTION OPPOSITE RAYS TWO RAYS WITH THE SAME ENDPOINT AND FORM A STRAIGHT LINE PARALLEL LINES TWO LINES IN THE SAME PLANE THAT DO NOT EVER INTERSECT COLLINEAR POINTS POINTS THAT LIE ON THE SAME LINE NONCOLLINEAR POINTS POINTS THAT DO NOT LIE ON THE SAME LINE TRUE/FALSE 1. A RAY HAS ONE ENDPOINT 2. POINTS THAT LIE ON THE SAME LINE ARE CALLED LINEAR. 3. A LINE IS ALWAYS STRAIGHT. 1. TRUE 2. FALSE 3. TRUE ANGLE PAIR OF TWO RAYS THAT HAVE THE SAME ENDPOINT. RAYS ARE THE SIDES OF THE ANGLE. VERTEX OF THE ANGLE THE ENDPOINT WHERE TWO RAYS MEET POLYGON CLOSED FIGURE WITH THREE OF MORE SIDES THAT INTERSECT ONLY AT THEIR ENDPOINTS. THE SIDES ARE LINE SEGMENTS. CONGRUENT TWO SHAPES THAT ARE EXACTLY BOTH THE SAME SIZE AND THE SAME SHAPE PERIMETER OF A POLYGON SUM OF THE MEASUREMENTS OF ALL SIDES OF THE POLYGON AREA NUMBER OF SQUARE UNITS THE FIGURE CONTAINS RATIO TWO NUMBERS DIVIDED A DIVIDED BY B PROPORTION EQUATION THAT SETS TWO RATIOS EQUAL. A DIVIDED BY B EQUALS C DIVIDED BY D