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Posted on April 22, 2022 (Updated on July 9, 2025)

What angles are supplementary in a transversal?

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If two parallel lines are cut by a transversal, then, interior angles on the same side of the transversal are supplementary. If two parallel lines are cut by a transversal, then, exterior angles on the same side of the transversal are supplementary.

Which angle pairs are supplementary?

Supplementary angles are two angles whose measures add up to 180° . The two angles of a linear pair , like ∠1 and ∠2 in the figure below, are always supplementary.

What angles on the same side of the transversal are supplementary?

When a transversal intersects two lines, the two lines are parallel if and only if interior angles on the same side of the transversal and exterior angles on the same side of the transversal are supplementary (sum to 180°).

Is transversal supplementary?

When two lines are cut by a transversal, the pairs of angles on one side of the transversal and inside the two lines are called the consecutive interior angles . If two parallel lines are cut by a transversal, then the pairs of consecutive interior angles formed are supplementary .

What are the angles formed by the transversal?

When two parallel lines are intersected by the transversal, eight angles are formed. The eight angles include corresponding angles, alternate interior and exterior angles, vertically opposite angles, and co-interior angles.

What are examples of supplementary angles?

Supplementary angles are those angles that sum up to 180 degrees. For example, angle 130° and angle 50° are supplementary angles because sum of 130° and 50° is equal to 180°.



Some of the examples of supplementary angles are:

  • 120° + 60° = 180°
  • 90° + 90° = 180°
  • 140° + 40° = 180°
  • 96° + 84° = 180°


Can 3 angles be supplementary?

No, three angles can never be supplementary even though their sum is 180 degrees. Though the sum of angles, 40°, 90° and 50° is 180°, they are not supplementary angles because supplementary angles always occur in pairs. The definition of supplementary angles holds true only for two angles.

What is the supplement of 40 degrees?

The supplement of a 40° angle is a 140° angle.

What is the supplementary angle of 180 degree?

supplementary angle = 180 degrees. given supplementary angle of 180. so, 180 + 180 = 360.

Can 2 acute angles be supplementary?

Justify. By definition, acute angles are the angles that measure the angle greater than 0° and less than 90°. If you add two acute angles in which each angle is large as possible, its sum will be less than 180°.

Can a pair of vertical angles be supplementary?

Vertical angles are supplementary angles when the lines intersect perpendicularly. For example, ∠W and ∠ Y are vertical angles which are also supplementary angles.

What is the supplement of an angle whose measure is 49 degrees?

Hence, the supplement angle of 49o is 131o.

Can 2 obtuse angles be supplementary?

Two obtuse angles can be supplementary angles.

What is complementary angle in math?

Definition of complementary angles



mathematics. : two angles that add up to 90 degrees.

How do you find the pair of supplementary angles?

Working rule: To find the supplementary angle of a given angle, subtract the measure of angle from 180°. So, the supplementary angle = 180° – the given angle.

Are supplementary congruent?

If angles are supplementary to the same angle, then they supps of same ∠ ⇒ ≅ are congruent. If angles are supplementary to congruent angles, then they supps of ≅ ∠s ⇒ ≅ are congruent. If angles are complementary to the same angle, then they comps of same ∠ ⇒ ≅ are congruent.

Are supplementary angles right angles?

A supplementary angle can be made up of two right angles. A right angle is an angle that is exactly 90 degrees.

Are 2 supplementary angles congruent?

No, supplementary angles are not always congruent, and we can demonstrate this by showing an example of two supplementary angles that are not congruent, meaning they do not have the same measure. Supplementary angles are defined as angles with a sum of 180°.

Are corresponding angles supplementary?

Corresponding angles can be supplementary if the transversal intersects two parallel lines perpendicularly (i.e. at 90 degrees). In such case, each of the corresponding angles will be 90 degrees and their sum will add up to 180 degrees (i.e. supplementary).

How do you find a transversal angle?

Video quote: If you take a look at an angle on one side of that transversal. And an angle on the opposite side of that transversal. We would say that those angles are on alternate sides of that transversal.

Which are corresponding angles?

In geometry, corresponding angles are formed where a line known as an intersecting transversal, crosses through a pair of straight lines. Corresponding angles are the pairs of angles that are found in the same relative position on different intersections.

Does corresponding angles add up to 180?

Any two angles that add up to 180 degrees are known as supplementary angles. Using some of the above results, we can prove that the sum of the three angles inside any triangle always add up to 180 degrees.

Do transversal angles equal 180?

If the transversal cuts across parallel lines (the usual case) then exterior angles are supplementary (add to 180°). So in the figure above, as you move points A or B, the two angles shown always add to 180°.

How do you know if an angle is complementary or supplementary?

Supplementary angles are two angles whose measures sum to a 180 degrees and complementary are the sum have to add up to 90 degrees.

What is the supplementary angle to 105?

Answer. 75 degree is the supplementary angle of 105 degree.

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