Worksheet on Vocabulary and Real Numbers

Nonrepeating, nonterminating decimals are called _________________

• irrational numbers

• rational numbers

• whole numbers

• integers

The sum of all of the angles of a triangle equals ________ degrees.

• 180

• 90

• 360

• 270

A triangle with two sides congruent and one angle that equals 110 degrees is classified as a(n) ________ __________.

• isosceles triangle

• acute and equilateral triangle

• scalene triangle

• obtuse and scalene triangle

A ________ angle is less than 90 degrees.

• acute

• obtuse

• right

• straight

A triangle with no sides congruent is called a(n) ___________ triangle.

• scalene

• isosceles

• equilateral

• right

II. Find each square root. -√49

• -7

• 7

• -49

• 49

Find the value of ±√169.

• 13

• -13

• ±13

• 169

Find the square root of -9.

• 3

• -3

• no answer

• -3i

III. Name all of the set of numbers to which each real number belongs (real, rational, irrational, integer, whole, counting). 3/7

• Real, Rational

• Real, Irrational

• Real, Integer

• Real, Whole

III. Name all of the set of numbers to which each real number belongs (real, rational, irrational, integer, whole, counting). -51

• Real, Rational, Integer

• Real, Irrational

• Real, Whole, Counting

• Real, Rational, Whole