## Are vertically opposite angles supplementary?

A pair of vertically opposite angles are always equal to each other. Also, a vertical angle and its adjacent angle are supplementary angles, i.e., they add up to 180 degrees.

### What are horizontal opposite angles?

When two lines intersect they form two pairs of opposite angles, A + C and B + D. Another word for opposite angles are vertical angles. Adjacent angles are angles that come out of the same vertex.

**Are horizontally opposite angles the same?**

Opposite angles, angles that are opposite each other when two lines cross, are also known as vertical angles because the two angles share the same corner. Opposite angles are also congruent angles, meaning they are equal or have the same measurement.

**Are opposite angles equal or supplementary?**

4) opposite angles are supplementary ( they add up to 180).

## Can 2 right angles be supplementary?

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

### Which pair of angles are always supplementary?

linear pair

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.

**Can you have a triangle with two right angles?**

No, a triangle can never have 2 right angles. A triangle has exactly 3 sides and the sum of interior angles sum up to 180°. Thus, it is not possible to have a triangle with 2 right angles.

**Is alternate interior angles congruent or supplementary?**

Alternate interior angles are congruent. Consecutive interior angles are supplementary. Consecutive interior angles are interior angles which are on the same side of the transversal line. Alternate interior angles don’t have any specific properties in the case of non – parallel lines.

## Can a triangle have 3 right angles?

A triangle can have one right angle. Sum of Interior Angles = 540′. Four right angles would leave 180′, which is impossible. So a pentagon has a maximum of three right angles, as shown.

### How are supplementary angles different from vertical angles?

Supplementary angles are two angles with a sum of 180º. Vertical angles are two angles whose sides form two pairs of opposite rays. We can think of these as opposite angles formed by an X.

**When do you call two angles complementary or supplementary?**

Two angles are called complementary if their measures add to 90 degrees, and called supplementary if their measures add to 180 degrees. Note that in these definitions, it does not matter whether or not the angles are adjacent; only their measures matter.

**How are angles equal when they are vertically opposite?**

This is a type of proof regarding angles being equal when they are vertically opposite. In the image above, angles A and B are supplementary, so add up to 180°. Angles B and C are also supplementary with each other.

## Can you add two obtuse angles to a supplementary angle?

No, two obtuse angles cannot form a supplementary angle. By the definition of obtuse angles, the angles that measure greater than 90° are obtuse. If you add two obtuse angles, the sum will be greater than 180°.