Terminology
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Transcript of Terminology
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Terminology Terminology Section 1.4
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Very Important. Very Important. = means Equal (Measurements
are exactly the same)
≅ congruent (physical object is the same size and shape)
means approximately (rounding your answer so what you write down is not exact)
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A Line segment is part of a line that contains endpoints.
Can be named or
• This is a line.
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Very Important:Very Important: is the actual line segment. It
is the physical object.
is the measure (distance) of segment XY.
How do you write segment AB?How do you write the
measurement of segment AB?
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Very ImportantVery Important
AB = XYThe measure of segment AB is equal to the measure of segment XY.
The physical line segment AB is congruent to the physical line segment XY.
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Measuring SegmentsMeasuring SegmentsTo find the distance b/w two points on a
number line, take the absolute value of the difference of the two points.
FindFind1. PQ 2. QR 3. RP 4. RT5. QX 6. RY 7. SQ 8. TY
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Pythagorean TheoremPythagorean Theorem
a² + b² = c²Only works for Right Triangles
a and b represent the legs: touch the right angle
c represents the hypotenuse: opposite the right angle
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Pythagorean TripletPythagorean Triplet3 – 4 – 55 – 12 – 13
These and any multiples of these are Pythagorean triplets.
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Find the length of the Find the length of the missing side.missing side.
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DISTANCEDISTANCEDay 2
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Warm upWarm up
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Segment Addition Segment Addition PostulatePostulateIf Q is between P and R, PQ + RQ
= PR.
Find HK if J is between H and K, HJ = 17, and JK = 6.
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Let L be between N and M. Find LM if NL = 6x -5, LM = 2x + 3, and NM = 30.
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If U is between T and B, find the value of x and TU.A)TU=2x, UB=3x+1, TB=21
B) TU=4x-1, UB=2x-1,TB=5x
C) TU=1-x, UB=4x+17,TB= -3x
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Distance FormulaDistance FormulaDistance between 2 points on a
coordinate plane.
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A) Find PQ if P(-3,-5) and Q(4,-6).
B) Find VS if V(-4,-3) and S(-4,3).
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C) Find DB.
D) Find AC.
E) Find AB.