HW 1.3

Front

What are supplementary angles?

Back

Supplementary angles are two angles whose measures add up to 180 degrees.

Front

If two angles are supplementary and congruent, what is their measure?

Back

90 degrees.

Front

What is the definition of congruent angles?

Back

Congruent angles are angles that have the same measure.

Front

What does it mean to bisect an angle?

Back

To bisect an angle means to divide it into two equal parts.

Front

If angle ABD = 5y - 3 and angle DBC = 3y + 5, how do you find angle ABC?

Back

Set the two expressions equal to each other and solve for y, then substitute back to find angle ABC.

Front

What is the sum of the interior angles of a triangle?

Back

The sum of the interior angles of a triangle is always 180 degrees.

Front

What is the formula for finding the measure of each angle in a regular polygon?

Back

The measure of each interior angle in a regular polygon can be found using the formula: (n-2) * 180 / n, where n is the number of sides.

Front

What is the definition of vertical angles?

Back

Vertical angles are the angles opposite each other when two lines intersect. They are always congruent.

Front

What is the relationship between complementary angles?

Back

Complementary angles are two angles whose measures add up to 90 degrees.

Front

How do you solve for an unknown angle in a triangle?

Back

Subtract the sum of the known angles from 180 degrees.