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Find the missing angles2

Find the missing angles2-example-1
User Paranoid
by
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1 Answer

3 votes

Explanation:

middle angle is 90° as shown in figure.

(8k+1)°+90°+49°=180°(by straight angle )

8k+1+90+49=180°

8k+91+49=180°

8k+140=180°

8k+=180°+140°

8k=40°

k=40°/8

k=5

(8k+1)°=8×5+1=41°

User Natschz
by
4.5k points