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1.3 notes
- 1. 1.3 Midpoint & Distance Formulas HW pg. 19 #436 evens 24 August 19, 2014 Bellwork 1. Find themissing length 2. Are DE & GH congruent, if D(-4,11), E(-4,-13), G(-14,5), H(-9,5)? 3. How do you name a plane? 4. What is a postulate? 5. 2 + 3 NO, DE = 24 & GH = 5 Must be 3 non-collinear points in that plane 3.2 A B C2 3.2 - 2 = 1.2 a rule that is accepted without proof 2 1 3 4 2 + 3 2 4 3 4 5 5 = 6 1 4 4 =
- 2. 1.3 Midpoint & Distance Formulas HW pg. 19 #436 evens 24 August 19, 2014 1.3 Midpoint andDistance Midpoint (M): point that divides the segment into 2 congruent ( ≅) segments A BM Segment Bisector (CD):a point, ray, line, line segment, or plane that intersects the segment at its midpoint. C D
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- 11. 1.3 Midpoint & Distance Formulas HW pg. 19 #436 evens 24 August 19, 2014 Distance Formula AB =√(x2 - x1)2 + (y2 - y1)2 (AB)2 = (x2 - x1)2 + (y2 - y1)2 or
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