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Geo CP 2-1 Day 2

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Geo CP 2-1 Day 2

Objectives:

SWBAT describe and use notation to identify rays (and their parts), opposite rays, segments (and their parts), lengths (distances), the distance formula, midpoints, bisectors .

SWBAT state and use the ruler and segment addition postulate.

HmwkPg. 15: 2,4,,8,9,15,17,28,30,32,33,35

Study for Friday quiz over 1-2,3,5

I

P

E

8

3

Geo CP 2-1 Day 2

True or False: PI + IE = PE.

Segment Addition Postulate

(“I” must be “between” P and E)

Geo CP 2-1 Day 2

1 + 5

8 - 2

4

-2

0

E

P

T

Geo CP 2-1 Day 2

If PT = 16, ET = 4x – 2 and EP = 6, what is x?

Postulate (Formula) PE + ET = PT

Substitute 6 + (4x - 2) = 16

Simplify 4x + 4 = 16

Solve 4x = 12

4x = 3

A

G

P

Geo CP 2-1 Day 2

If A is the midpoint of GP and GA = 5x + 2

and AP = 2x + 11, then what is the length of GA?

Postulate (Formula) GA = AP

Substitute 5x + 2 = 2x + 11

Simplify

Solve 3x + 2 = 11

3x = 9

Geo CP 2-1 Day 2

Be able to work pg. 15, problem 31.