Question

find the unkown marked angles​

Answer 1

Answer:

2m=40°, 4m=80°

Step-by-step explanation:

We know tha sum of all angles of triangle = 180°

1st angle = 180°-140°= 40°

2nd angle = 2m

3rd angle =180°- 4m

Therefore,

1st angle +2nd angle+3rd angle=180°

40°+2m+180°-4m= 180°

220°-2m=180°

2m=220°-180°

m=40°/2

m=20°

So,

1st angle=40°

2nd angle=2m=2×20= 40°

=4m=4×20=80°

Answer 2

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