Exploring Adding and Subtracting Rational Expressions

They are always obtuse angles.

They add up to 180 degrees.

They are congruent to each other.

They are always acute angles.

180 degrees

90 degrees

360 degrees

45 degrees

Divide the angles by 2

Multiply the angles

Add the angles and set equal to 90

Subtract from 180

270 degrees

360 degrees

180 degrees

90 degrees

Set the equation equal to 180 and solve

Set the equation equal to 90 and solve

Multiply the angles

Divide the angles by 2

Acute angles

Supplementary angles

Vertical angles

Complementary angles

Combine like terms

Identify the given variables

Subtract the smallest angle from the largest

Set the equation equal to 180

Multiply the given angle by 2

Subtract the given angle from 180

Subtract the given angle from 90

Add 90 to the given angle

They are equal to each other.

They are both acute angles.

They add up to 90 degrees.

They add up to 180 degrees.

By subtracting the angles from 360

By checking if the angles are congruent

By adding the angles to see if they match the expected sum

By dividing one angle by the other