Table of Contents

## Can 2 angles be supplementary if both of them are obtuse?

As we know that obtuse angle is always greater than 900. So, the sum of two obtuse angles always makes greater than 1800. ˆ´Sum of two obtuse angles cannot make a supplementary angle.

## Can two angles be supplementary if both of them are?

Thus, the two acute angles cannot be supplementary angles. Thus, the two obtuses angles cannot be supplementary angles. Thus, two right angles are supplementary angles.

**How do you tell if an angle is supplementary or congruent?**

A linear pair forms a straight angle which contains 180Âº, so you have 2 angles whose measures add to 180, which means they are supplementary. If two congruent angles form a linear pair, the angles are right angles. If two congruent angles add to 180Âº, each angle contains 90Âº, forming right angles.

**Are supplementary angles always congruent?**

No, supplementary angles are not always congruent, and we can demonstrate this by showing an example of two supplementary angles that are not…

### Why are they called same side interior angles?

Same-side interior angles are formed when a transversal line intersects two or more lines. When the lines that the transversal intersects are parallel, you get same-side interior angles that are supplementary, or add up to 180 degrees.

### Do alternate interior angles equal each other?

Alternate interior angles are equal if the lines intersected by the transversal are parallel. Alternate interior angles formed when a transversal crosses two non-parallel lines have no geometrical relation. Therefore, the pairs of alternating interior angles are: ˆ a & ˆ d.

**What is the formula of alternate interior angles?**

Next, notice that angle x and 58 form a straight angle. Since a straight angle measures 180 degrees, angle x + 58 = 180 and 180 – 58 = angle x, so angle x = 122. Finally, angle x and angle z are alternate interior angles, and we know that alternate interior angles are equal. So, angle x = 122 then angle z = 122.

**How do you prove parallel lines?**

If two lines are cut by a transversal so the alternate exterior angles are congruent, then the lines are parallel. If two lines are cut by a transversal so the consecutive interior angles are supplementary, then the lines are parallel. If two lines are parallel to the same line, then they are parallel to each other.

## Is a congruent angle always 90 degrees?

Congruent Angles have the same angle (in degrees or radians). That is all. These angles are congruent. They don’t have to point in the same direction.

## Do all right angles measure 90 degrees?

Acute angles measure less than 90 degrees. Right angles measure 90 degrees.