Geometry Vocabulary

A polygon is a 2-D shape that has no

• vertices

• curves

• angles

• parallel lines

What does the prefix "tri" mean?

• four
• three
• two
• five

Which word does the figure above model?

• array

• line segment

• ray

• line

An angle whose measure is exactly 90 degrees.

• acute
• vertical
• right
• straight

What is the name of this shape?

• trapezoid

• square

• hexagon

• triangle

What degree makes up half a circle?

• 180

• 360

• 90

• 0

What shape has the following attributes? 6 sides, 6 angles, and 6 corners

• triangle

• pentagon

• hexagon

• square

The angle formed by two perpendicular lines is

• an obtuse angle

• an acute angle

• a right angle

• a triangle

I have four sides, what am I?

• I am a triangle.

• I am a non-polygon.

• I am a quadrilateral.

• I am a hexagon.

Define Obtuse

• Less than 90
• Exactly 90
• Greater than 90 and less than 180
• Exactly 180