Download File

10/19/15 = GEOMETRY………………………………………….…………
HW WAS - p.164 1-18 all
SAW
*YOU ARE ALWAYS SUPPOSED TO CORRECT ANY HW PROBLEM
THAT YOU GOT WRONG – EVERY DAY/NIGHT
Give me your spiral while we listen to our prayer song – then = test
1ST PERIOD IS NOT FOR DOING HW – IT IS TIME TO:
– CHECK EVENS
- ASKING ? AND CLARIFYING AND
- DOING CORRECTIONS
– YOU MUST WORK AS A GROUP AND ASK EACH OTHER QUESTIONS
BEFORE YOU GO TO MR. REICH FOR HELP
– YOU MUST CHECK ODDS AT HOME – WHERE YOU DO YOUR HW.
GEOMETRY CLASS NEEDS TO SIT TOGETHER IN 1ST PERIOD AND DO THIS.
YOU MUST BE ABLE TO SHOW HIM ON PAPER WHERE YOU TRIED IT –
BEFORE YOU CAN ASK FOR HELP – ALL 3 MUST SHOW IT FIRST!!
Let’s grade your HW: p.164 1-18 all
GRADE: each problem = - EACH
1. skew = the nots = not parallel and not intersecting …
and not coinciding = skew means they can never touch!
not intersect & not parallel
2. perpendicular
the x-axis and the y-axis are also perpendicular!
3. parallel
4. parallel
5. perp.
6. conclusion: <FGJ and <GJH are complementary – and/or –
m<FGJ + m<GJH = 90 degrees
7. x = 38
Given:
line c is perp. To line d
Tells you:
a right angle lives at their intersection
So:
2x + 14 = 90
Solve for x:
2x = 90 – 14
2x = 76
/2
/2
X = 38
8. AI
9. CORR
10. CORR
11. AE
12. SSI
13. CORR
14.
m<1 = 108 deg.
 Corr angles postulate
m<2 = 72 deg.
 SSI angles theorem
m<3 = 72 deg.
 Linear Pair Postulate
14.
at board…
15.
y = 22
Given:
67 deg; 3y+1  on your drawing
Relationship between those two pieces of information?
AE – so – AE angles are congruent so:
67 = 3y + 1
67-1 = 3y
66 = 3y
66/3 = 3y/3
22 = y
16.
y = 32
17.
yes – because in a plane if two lines are perp to the same line
then they are parallel to each other = theorem 3.12
18.
words = moved 6 units right and 2 units up
Coordinate notation = (x,y)  (x+6 , y+2)
Hw = p.165 saw = wtp & dtp & work it
TRANSLATIONS ARE … one kind of Transformation!
In Math – to move from one place on a graph to another - …like a slide…
COORDINATE NOTATION
Point (x,y)
If we translate that point then the new point needs a new name…
In relation to the old name…
Point (x-3 , y+4)
(x,y)  (x-3, y+4)  these are like directions!
Take point (x,y) and go -3 left 3 for x and – go +4 up 4 for y
Translation – the figure must retain its original size and shape!
SAW so if there is any work
(MATH) that can be done – I
want to see it – on your
paper!
*HW = Hw = p.165 saw = wtp(write) & dtp(draw) & work it
TEST IS NEXT THURSDAY ON CH 3!
SAW: SHOW ALL WORK – means:
1. WTP = write the problem & CIRCLE THE PROBLEM #
1a. DTP – draw the problem if applicable
2. SAW = show all work
3. find then RECORD YOUR ANSWER
4. SKIP A LINE
5. DO NEXT PROBLEM
HINT = DO THE ODDS FIRST! DO THEN CHECK THE CORRECT!