The sum of the two angles formed at the intersection of two straight lines is 180 *. These angles are

| June 9, 2021 | education

The sum of the two angles formed at the intersection of two straight lines is 180 *. These angles are: a) adjacent b) vertical c) there is no correct answer d) may be adjacent, may be vertical

When two straight lines intersect, four angles ∠1, ∠2, ∠3 and ∠4 are formed (clockwise). ∠1 = ∠3 (as vertical) and ∠2 = ∠4 (as vertical); ∠1 + ∠2 = 180 ° (as adjacent), ∠2 + ∠3 = 180 ° (as adjacent), ∠3 + ∠4 = 180 ° (as adjacent), ∠4 + ∠1 = 180 ° (as adjacent ).

If two straight lines intersect at right angles, then all angles will be equal to 90 °, thus the sum of the two vertical angles will be equal to 180 °.

If the sum of two angles formed at the intersection of two straight lines is 180 °, then these angles can be adjacent and can be vertical (if the straight lines are perpendicular).

Answer: d.



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