A line is drawn with an arrow pointing in both ... - The McNabbs

Name_______________________________ Period_______ Date___________________Parts of a LineA _______ is drawn with an arrow pointing in both directions. The arrows mean thatthe line goes on forever.To tell the difference between different lines, we use two points on them.ABCDWe say this is “LINE AB”.We say this is “LINE CD.”We write this asAB orBA .We write this asCD orDC .What if there is more than one point on a line? Simple. It just means that it has morenames.W X YWX ,XW ,We can call thisare talking about the same line.WY ,YW ,WY , orYW . All of theseA ____________ is a specific part of the line from one point to another. We drawthem with points on both ends. This means that we are talking about a certain distance.You can always take a ruler and say how long it is. You can’t do that with a line.ABCDWe say this is “LINE SEGMENT AB.”We write this as AB or BA .We say this is “LINE SEGMENT CD.”We write this as CD or DC .A _______ is a combination of a line segment and a line. It always starts at a pointand then goes forever.We say this is “RAY AB.”We write this asThis is not the same asAB .BAAABB

Look atFG. Find the length of the indicated line segments.1)F G H I J KFG = ______ inches 2)FH = ______ inches3)HK = ______ inches 4)HJ = ______ inches5)IG = ______ inches 6)KG = ______ inchesA _____________ is a point that is in the middle of a line segment.For example: X is the midpoint ofAB. X is also the midpoint ofQW .Q A X B WIf R is the midpoint of AJ in the picture below, then what are the lengths of thefollowing line segments?A B C D E R F G H I J7)AB = ______ inches 8)DE = ______ inches9) RG = ______ inches 10)11) RA = ______ inches12)BF = ______ inchesCE = ______ inches_____________ are lines thatwill never cross._______________ are linesthat cross at a 90 0 angle.

Look atFG. Find the length of the indicated line segments.1)F G H I J KFG = __1___ inches 2)FH = __ 2___ inches3)HK = __3___ inches 4)HJ = ___2___ inches5)IG = ___2___ inches 6)KG = ___4___ inchesA Midpoint is a point that is in the middle of a line segment.For example: X is the midpoint ofAB. X is also the midpoint ofQW .Q A X B WIf R is the midpoint of AJ in the picture below, then what are the lengths of thefollowing line segments?A B C D E R F G H I J7)AB = __1/2__ inches 8)DE = __1/2__ inches9) RG = __ 1 __ inches 10)11) RA = _2 1/2_ inches12)BF = _2 1/2_ inchesCE = ___1__ inchesParallel Lines are lines thatwill never cross.Perpendicular Lines are linesthat cross at a 90 0 angle.