6th Grade Math: Unit 09 Vocabulary

Fill in the blank: An ________ is an angle that measures less than 90°.

• acute angle

• obtuse angle

• right angle

• reflex angle

Fill in the blank: An ________ is formed by two rays with a common endpoint (the vertex).

• angle

• circle

• line segment

• polygon

Fill in the blank: ________ are angle marks indicating angles of the same measure.

• angle congruency marks

• angle bisectors

• perpendicular bisectors

• parallel lines

Fill in the blank: ________ is the measurement attribute that describes the number of square units a figure or region covers.

• area

• volume

• length

• perimeter

Fill in the blank: The ________ of a right rectangular prism are any two congruent, opposite, and parallel faces shaped like rectangles; exactly 3 possible sets.

• bases

• edges

• vertices

• diagonals

Fill in the blank: ________ means of equal measure, having exactly the same size and same shape.

• congruent

• parallel

• perpendicular

• similar

Fill in the blank: An ________ is where the sides of two faces meet on a three-dimensional figure.

• edge

• vertex

• angle

• corner

Fill in the blank: An ________ is a mathematical statement composed of algebraic and/or numeric expressions set equal to each other.

• equation

• variable

• function

• inequality

Fill in the blank: ________ means all angles in a polygon are congruent in measure.

• equiangular

• equilateral

• regular

• scalene

Fill in the blank: ________ means all side lengths of a polygon are congruent in measure.

• equilateral

• isosceles

• scalene

• concave