Page 173 - TB_5B
P. 173
2 . a . 720 b . 540 Activity 2 P. 22~24
1. a.
Challenge P. 16~17
b.
1 . a . 108 b . 120
c.
2 . b . An interior angle of a square is 90Ø.
d.
An interior angle of a pentagon is 108Ø.
Therefore, the measure of the marked
angle is 360Ø 90Ø 108Ø 162Ø.
c . An interior angle of a pentagon is 108Ø.
An interior angle of a hexagon is 120Ø.
Therefore, the measure of the marked
angle is 360Ø 108Ø 120Ø 132Ø.
Unit 19. The World of Patterns
Activity 1 P. 20~21
1.
This shape cannot be used 2. b.
to make a tessellation.
162
1. a.
Challenge P. 16~17
b.
1 . a . 108 b . 120
c.
2 . b . An interior angle of a square is 90Ø.
d.
An interior angle of a pentagon is 108Ø.
Therefore, the measure of the marked
angle is 360Ø 90Ø 108Ø 162Ø.
c . An interior angle of a pentagon is 108Ø.
An interior angle of a hexagon is 120Ø.
Therefore, the measure of the marked
angle is 360Ø 108Ø 120Ø 132Ø.
Unit 19. The World of Patterns
Activity 1 P. 20~21
1.
This shape cannot be used 2. b.
to make a tessellation.
162
