1.3 Midpoint & Distance Formulas
HW pg. 19 #436 evens 24
August 19, 2014
Bellwork1. Find the missing length2. 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 C23.2 - 2 = 1.2
a rule that is accepted without proof
21 3
4 2 + 3
24
34
5 5 = 6 1 4 4=
1.3 Midpoint & Distance Formulas
HW pg. 19 #436 evens 24
August 19, 2014
1.3 Midpoint and Distance
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
1.3 Midpoint & Distance Formulas
HW pg. 19 #436 evens 24
August 19, 2014
1.3 Midpoint & Distance Formulas
HW pg. 19 #436 evens 24
August 19, 2014
1.3 Midpoint & Distance Formulas
HW pg. 19 #436 evens 24
August 19, 2014
1.3 Midpoint & Distance Formulas
HW pg. 19 #436 evens 24
August 19, 2014
1.3 Midpoint & Distance Formulas
HW pg. 19 #436 evens 24
August 19, 2014
Midpoint Formulax1 + x2 y1 + y2 2 2( ),
1.3 Midpoint & Distance Formulas
HW pg. 19 #436 evens 24
August 19, 2014
1.3 Midpoint & Distance Formulas
HW pg. 19 #436 evens 24
August 19, 2014
1.3 Midpoint & Distance Formulas
HW pg. 19 #436 evens 24
August 19, 2014
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
1.3 Midpoint & Distance Formulas
HW pg. 19 #436 evens 24
August 19, 2014
1.3 Midpoint & Distance Formulas
HW pg. 19 #436 evens 24
August 19, 2014
1.3 Midpoint & Distance Formulas
HW pg. 19 #436 evens 24
August 19, 2014
HW: pg 19
#4-36 evensexcept 24. yippee!!
