2 answers:
THEOREM:
- Angle sum property —: The sum of interior angles of a triangle is 180°.
ANSWER:
Let the missing angle be x.
By angle sum property,
- ∠x + 20° + 80° = 180°
- ∠x + 100 = 180°
- ∠x = 180° – 100°
- ∠x = 80°
So, <u>Correct choice</u> - [C] 80°.
Answer:
Answer:
80°+20°+missing angle=180°[ sum of interior angle of a triangle is 180°]
missing angle=180°+100=80°
<u>is</u><u> </u><u>your</u><u> </u><u>answer</u>
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