What is the sum of the interior angles of a polygon with n sides?

The sum is given by the formula $$(n - 2) \times 180$$ degrees.

What is the formula for the area of a triangle?

$$Area = \frac{1}{2} \times base \times height$$ .

What is a linear equation?

An equation that makes a straight line when graphed, typically in the form $$y = mx + b$$ .

What does it mean for an equation to have no solution?

It means there are no values for the variable that satisfy the equation.

What is the definition of a variable in mathematics?

A symbol used to represent an unknown value, often denoted by letters like x or y.

What is the formula for the circumference of a circle?

$$C = 2\pi r$$ , where r is the radius.

What is the difference between a rational and an irrational number?

A rational number can be expressed as a fraction, while an irrational number cannot.

What is the definition of a function?

A relation that assigns exactly one output for each input.

The Stuff You Should Know Flashcards

Student preview

15 questions

Show all answers

1.

FLASHCARD QUESTION

Front

What is the longest side of a right triangle called?

Back

hypotenuse

2.

FLASHCARD QUESTION

Front

How many solutions does the equation 2x - 3 = 2x + 3 have?

Back

no solution

3.

FLASHCARD QUESTION

Front

How many degrees are in a triangle?

Back

180

4.

FLASHCARD QUESTION

Front

What is the formula for the volume of a sphere?

Back

5.

FLASHCARD QUESTION

Front

How many solutions are in the equation 4(x + 2) = 2(2x + 4)?

Back

infinitely many solutions

6.

FLASHCARD QUESTION

Front

What is a right triangle?

Back

A triangle with one angle measuring 90 degrees.

7.

FLASHCARD QUESTION

Front

What is the Pythagorean theorem?

Back

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