Geometry Vocabulary

Fill in the blank: An angle that measures less than 90 degrees is called an _________.

• acute angle.

• obtuse angle.

• right angle.

• straight angle.

Fill in the blank: An angle that measures more than 90 degrees but less than 180 degrees is called an _________.

• obtuse angle.

• acute angle.

• right angle.

• straight angle.

Fill in the blank: Lines that are always the same distance apart and never meet or intersect are called _________.

• parallel lines.

• perpendicular lines.

• intersecting lines.

• skew lines.

Fill in the blank: A three-dimensional shape with six equal square faces is called a _________.

• cube.

• sphere.

• cylinder.

• pyramid.

Fill in the blank: A four-sided shape (quadrilateral) with opposite sides that are equal and four right angles is called a _________.

• rectangle

• square

• parallelogram

• trapezoid

Fill in the blank: A special type of rectangle where all four sides are equal in length is called a _________.

• square.

• rectangle.

• parallelogram.

• rhombus.

Fill in the blank: A three-sided polygon is called a _________.

• triangle.

• square.

• rectangle.

• circle.

Fill in the blank: A four-sided shape (quadrilateral) with opposite sides that are equal and parallel is called a _________.

• parallelogram

• rectangle

• trapezoid

• rhombus

Fill in the blank: A polygon with four sides and four angles is called a _________.

• quadrilateral.

• triangle.

• pentagon.

• hexagon.

Fill in the blank: Characteristics that define triangles, such as the sum of the angles always being 180 degrees, are called _________.

• properties of triangles.

• angles of triangles.

• sides of triangles.

• vertices of triangles.