5th Grade Geometry Vocabulary

What is a closed plane figure made up of straight line segments?

•  Polygon
• Irregular Polygon
• Circle
• Shape

What shape has sides of equal length and angles of equal measure?

• Irregular Polygon
• Shapes
• Circles
• Regular Polygon

What triangle has all sides the same length?

• Acute
• Equilateral
• Isosceles
• Scalene

What triangle has only two sides that are same length?

• Right
• Equilateral 
• Isosceles
• Scalene

What triangle has no sides that are the same length?

• Acute
• Scalene
• Isosceles
• Equilateral 

What triangle has three angles that are all acute?

• Acute
• Right
• Scalene
• Obtuse

This triangle has one angle that is obtuse.

• Acute
• Scalene
• Obtuse
• Right

This triangle has one angle that is right. 

• Isosceles
• Right
• Scalene
• Acute

A quadrilateral with two pairs of parallel lines and each pair of sides are equal in length is called a:

• trapezoid
• quadrilateral 
• parallelogram
• isosceles triangle 

This quadrilateral has only one pair of parallel sides

• trapezoid 
• rectangle 
• parallelogram 
• square