Do Now 4/9/13 Take out HW from last night. –Text p. 329, #1-4 all Copy HW in your planner. –Text p. 332, #1-23 all, 25, 29-31 Be ready to complete NJASK7.

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Do Now 4/9/13 Take out HW from last night. –Text p. 329, #1-4 all Copy HW in your planner. –Text p. 332, #1-23 all, 25, Be ready to complete NJASK7 prep problem from yesterday.

y-axis x-axis (-2,-10) xy (-1,-7) 0-4 (0,-4) 1 (1,-1) 22 (2,2)(2,2)(2,2)(2,2) 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.)

y-axis x-axis (-4,-8) xy (-2,-5) 0-2 (0,-2) 21 (2,1)(2,1)(2,1)(2,1) 44 (4,4)(4,4)(4,4)(4,4) 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.)

Homework Text p. 329, #1-4 all 1) 100° 2) The measure of angle 4 will increase also, remaining congruent to angle 2 as it increases. The measures of angles 1 & 3 will decrease as the measure of angle 2 increases. 3) 46° 4) 92°

Objective SWBAT find the measures of angles in polygons

Angles of a Triangle The sum of the measures of the angles of any triangle is 180 degrees. a° c° b° C A B Section 8.4, “Angles in Polygons”

What is the missing angle??? 35° x° A B C 35° 125° + x = 180° - 125° -125° x = 55° x = 55° + x° + x° + 90° + 90° = 180°

What is the missing angle??? x°37° A B C 85° 122° + x = 180° - 122° -122° x = 58° x = 58° + 37° + 37° + x° + x° = 180° 85°

How many triangles do you see? Diagonal A line segment that connects two non- adjacent vertices of a polygon.

Angles of a Quadrilateral The sum of the measures of the angles of any quadrilateral is 360 degrees. C A B D

What is the missing angle??? A B C + 98° 287° + x = 360° - 287° -287° x = 73° x = 73° + x° + x° + 137° + 137° = 360° x° 52° 137° 98° D 52°

What is the missing angle??? A B C + x° 204° + x = 360° - 204° -204° x = 156° x = 156° + 73° + 73° + 68° + 68° = 360° D 63° x° 63° 68° 73°

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 are formed from 1 vertex? How many degrees are there in one triangle? How many degrees are there in a pentagon? 3 180° 540° How many triangles do you see?

Divide each polygon into triangles to find the sum of its angle measures. There are 6 triangles. The sum of the angle measures of an octagon is 1,080°. 6 · 180° = 1080° There are 2 triangles. The sum of the angle measures of a quadrilateral is 360°. 2 · 180° = 360°

Homework –Text p. 332, #1-23 all, 25, NJASK7 Prep