CW#4

Front

What are vertical angles?

Back

Vertical angles are angles that are opposite each other when two lines intersect. They are always congruent (equal in measure).

Front

What is the equation to solve for x in the expression 12X - 19 + 4X + 1 = 180?

Back

The equation is 12X - 19 + 4X + 1 = 180.

Front

What are supplementary angles?

Back

Supplementary angles are two angles that add up to 180°.

Front

Solve for x: 2(4x - 3) - 8 = 4 + 2x

Back

x = 3.

Front

What operation do you perform to isolate a variable when you have an equation?

Back

You may need to multiply, divide, add, or subtract to isolate the variable, depending on the equation.

Front

What are adjacent angles?

Back

Adjacent angles are two angles that share a common side and a common vertex but do not overlap.

Front

What is the sum of the angles in a triangle?

Back

The sum of the angles in a triangle is always 180°.

Front

What is the definition of congruent angles?

Back

Congruent angles are angles that have the same measure.

Front

What is the formula for finding the measure of an exterior angle of a triangle?

Back

The measure of an exterior angle is equal to the sum of the measures of the two opposite interior angles.

Front

What is the difference between complementary and supplementary angles?

Back

Complementary angles add up to 90°, while supplementary angles add up to 180°.