Post on 19-Jan-2016
Do Now 4/9/13Do Now 4/9/13
Take out HW from last night.Take out HW from last night.– Text p. 329, #1-4 allText p. 329, #1-4 all
Copy HW in your planner.Copy HW in your planner.– Text p. 332, #1-23 all, 25, 29-31Text p. 332, #1-23 all, 25, 29-31
Be ready to complete NJASK7 prep Be ready to complete NJASK7 prep problem from yesterday.problem from yesterday.
22
44
66
88
1010
00 22 44 66 88 1010 1212
y-axisy-axis
x-axisx-axis
((-2-2,,-10-10))
-12-12 -10-10 -8-8 -6-6 -4-4 -2-2
-10-10
-8-8
-6-6
-4-4
-2-2
xx yy
43 xy
-2-2 -10-10
-1-1 -7-7
((-1-1,,-7-7))
00 -4-4 ((00,,-4-4))
11 -1-1
((11,,-1-1))
22 22
((22,,22))
Complete the function table for the given function. Plot the numbers from the function table on the corresponding graph. Draw a line or curve representing the function. (Be sure to label your graph.)
22
44
66
88
1010
00 22 44 66 88 1010 1212
y-axisy-axis
x-axisx-axis
((-4-4,,-8-8))
-12-12 -10-10 -8-8 -6-6 -4-4 -2-2
-10-10
-8-8
-6-6
-4-4
-2-2
x y
-4-4 -8-8
-2-2 -5-5((-2-2,,-5-5))00 -2-2
((00,,-2-2))
22 11
((22,,11))
44 44
((44,,44))
423 yx
Complete the function table for the given function. Plot the numbers from the function table on the corresponding graph. Draw a line or curve representing the function. (Be sure to label your graph.)
HomeworkHomeworkText p. 329, #1-4 allText p. 329, #1-4 all
1) 1001) 100°°
2) The measure of 2) The measure of angle 4 will increase angle 4 will increase also, remaining also, remaining congruent to angle 2 congruent to angle 2 as it increases. The as it increases. The measures of angles 1 measures of angles 1 & 3 will decrease as & 3 will decrease as the measure of angle the measure of angle 2 increases.2 increases.
3) 463) 46°°
4) 924) 92°°
ObjectiveObjective
SWBAT find the measures of angles in SWBAT find the measures of angles in polygons polygons
Angles of a TriangleAngles of a TriangleThe sum of the measures of the angles of any triangle is 180 degrees.
a°a°
c°c° b°b°CC
AA
BB
180cba
Section 8.4, “Angles in Polygons”Section 8.4, “Angles in Polygons”
What is the missing angle???What is the missing angle???
180cba35°
x°
A
BC
35°35°
125° + x = 180°125° + x = 180°- 125° -125°- 125° -125°
x = 55°x = 55°
+ x°+ x° + + 90°90° = 180= 180° °
What is the missing angle???What is the missing angle???
180cba
x° 37°
A
BC
85°85°
122° + x = 180°122° + x = 180°- 122° -122°- 122° -122°
x = 58°x = 58°
+ 37°+ 37° + x+ x°° = 180= 180° ° 85°
How many triangles do you see?How many triangles do you see?
DiagonalA line segment that connects two non-adjacent vertices of a polygon.
Angles of a QuadrilateralAngles of a QuadrilateralThe sum of the measures of the angles The sum of the measures of the angles of any quadrilateral is 360 degreesof any quadrilateral is 360 degrees..
CC
AABB
360dcba
DD
What is the missing angle???What is the missing angle???
360dcbaAA
BB
CC
+ 98°+ 98°
287° + x = 360°287° + x = 360°- 287° -287°- 287° -287°
x = 73°x = 73°
+ x°+ x° + 137+ 137°° = 360= 360° °
x°x°
52°52°
137°137°98°98° DD52°52°
What is the missing angle???What is the missing angle???
360dcba
AA
BB
CC
+ x°+ x°
204° + x = 360°204° + x = 360°- 204° -204°- 204° -204°
x = 156°x = 156°
+ 73°+ 73° + 68+ 68°° = 360= 360° °
DD
63°63°
x°x°
63°63°
68°68°73°73°
)180)(2( n
720
)180(4
)180)(26(
)180)(2(n
How many triangles are formed from 1 vertex?
How many degrees are there in one triangle?
How many degrees are there in a hexagon?
4
180°
720°
How many triangles do you see?How many triangles do you see?
How many triangles are formed from 1 vertex?
How many degrees are there in one triangle?
How many degrees are there in a pentagon?
3
180°
540°
)180)(25(
)180)(3(
540
How many triangles do you see?How many triangles do you see?
Divide each polygon into triangles to find the sum of its angle measures.
There are 6 triangles.There are 6 triangles.
The sum of the angle The sum of the angle measures of an octagon measures of an octagon is 1,080°.is 1,080°.
6 · 180° = 1080°6 · 180° = 1080°
There are 2 triangles.There are 2 triangles.
The sum of the angle The sum of the angle measures of a measures of a quadrilateral is 360°.quadrilateral is 360°.
2 · 180° = 360°2 · 180° = 360°
HomeworkHomework
– Text p. 332, #1-23 all, 25, 29-31Text p. 332, #1-23 all, 25, 29-31
NJASK7 PrepNJASK7 Prep