Exploring Angles and Algebra

What type of angle measures less than 90 degrees?

• Obtuse angle

• Acute angle

• Right angle

• Straight angle

What type of angle measures exactly 90 degrees?

• Straight angle

• Right angle

• Obtuse angle

• Acute angle

What type of angle measures more than 90 degrees but less than 180 degrees?

• Obtuse angle

• Right angle

• Straight angle

• Acute angle

What is the relationship between complementary angles?

• They are always equal in measure.

• The sum of their measures is 90 degrees.

• The sum of their measures is 180 degrees.

• Their measures can be any positive angles.

What is the relationship between supplementary angles?

• Supplementary angles are complementary angles.

• Supplementary angles sum to 180 degrees.

• Supplementary angles sum to 90 degrees.

• Supplementary angles are always acute.

If two angles are vertical angles, what can you say about their measures?

• The measures of vertical angles are equal.

• The measures of vertical angles are complementary.

• The measures of vertical angles are supplementary.

• The measures of vertical angles are always different.

What is an algebraic expression?

• An algebraic expression consists only of numbers and operators.

• An algebraic expression is a single variable without any numbers.

• An algebraic expression is a combination of numbers, variables, and operators without an equality sign.

• An algebraic expression is a statement with an equality sign.

Which of the following is an example of an algebraic expression: 3x + 5 or 7?

• 5 + 2y

• x^2 - 4

• 3x + 5

• 3x + 7

What is the coefficient in the expression 4y + 2?

• 4y

• 2

• y

• 4

How do you simplify the expression 2x + 3x?

• 4x

• 2x + 3

• 6x

• 5x