A monomial contains one term, a binomial contains two terms, and a polynomial contains more than two terms.

According to the Pythagorean theorem, the hypotenuse squared is equal to the sum of the two perpendicular sides squared:

c² = a² + b²
c² = 7² + 5²
c² = 49 + 25
c² = 74
c = \( \sqrt{74} \)

Parallel lines are lines that share the same slope (steepness) and therefore never intersect. A transversal occurs when a set of parallel lines are crossed by another line. All of the angles formed by a transversal are called interior angles and angles in the same position on different parallel lines equal each other (a° = w°, b° = x°, c° = z°, d° = y°) and are called corresponding angles. Alternate interior angles are equal (a° = z°, b° = y°, c° = w°, d° = x°) and all acute angles (a° = c° = w° = z°) and all obtuse angles (b° = d° = x° = y°) equal each other. Same-side interior angles are supplementary and add up to 180° (e.g. a° + d° = 180°, d° + c° = 180°).

To multiply monomials, multiply the coefficients (the numbers that come before the variables) of each term, add the exponents of like variables, and multiply the different variables together.

(8a)(2ab) - (8a²)(4b)
(8 x 2)(a x a x b) - (8 x 4)(a² x b)
(16)(a¹⁺¹ x b) - (32)(a²b)
16a²b - 32a²b
-16a²b

The entire length of this line is represented by AD which is AB + BD:

AD = AB + BD