Daffynition Decoder page 121

1). angle 3= 48° [by vertically opposite angle]

2). angle 4 = 132° [by linear pair]

3). angle 5 = 50° [angle 6 and angle 5 are complementary angles]

4). angle 8 =36° [angle 7 and angle 8 are complementary angles]

5). angle 6 = 31° [sum of angle on straight line is 180°]

6). angle 8=33° [sum of angles on straight line is 180°]

7). angle 9=40° [sum of angles of triangle is 180°]

8). angle 3= 30°[angle 9 and 12 are linear pair and 9 is part of the triangle. so, sum of all angle of triangle is 180° ]

9). angle 15= 80° [sum of angles of triangle is 180°]

10). angle 8=35° [sum of angles of triangle is 180°]

11). angle 7=66°[sum of angles of triangle is 180°]

12). angle 14=105° [Sum of angles of triangle is 180°]

13). angle 12=130°[by sum of angle is 180°we'll find 9 then by linear pair angle 12= 130°]

14). angle 8=55° [ angle 14 and 16 are equal by vertically opposite angles and angle 14+angle 8+angle 3=180°]

15). angle 15=90°[first find 7 and 9 by sum of 90°and sum 180° then sum of angles of triangle is180°]

16). angle 16=95°[angle 7 and 8 are complementary angles and angle 1 and 3 are equal by vertically opposite angles now we have our two angles of the triangle so we can find third angle because sum of angle of triangle is 180°]

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step-by-step explanation:

step-by-step explanation: