Geometry Vocabulary 1

A triangle containing a right angle (a)  

• obtuse triangle
• acute triangle
• right triangle
• scalene triangle

Tags

CCSS.4.G.A.2

A polyhedron with a polygon base and triangular sides that all meet a common vertex. (a)  

• prism
• pyramid
• hexahedron
• octahedron

Tags

CCSS.1.G.A.1

CCSS.2.G.A.1

A four-sided polygon. (a)  

• triangle
• heptagon
• decagon
• quadrilateral

Tags

CCSS.2.G.A.1

A ten sided polygon. (a)  

• decagon
• dodecagon
• octagon
• hexagon

Tags

CCSS.2.G.A.1

A pair of opposite congruent angles formed by intersecting lines. (a)  

• adjacent angles
• vertical angles
• supplementary angles
• complementary angles

Tags

CCSS.7.G.B.5

A three-dimensional figure with all points the same distance from the center. (a)  

• cone
• cylinder
• cube
• sphere

Tags

CCSS.1.G.A.1

CCSS.2.G.A.1

The theorem that states that the measures of the angles in a triangle add to 180 degrees. (a)  

• triangle inequality theorem
• triangle sum theorem
• Pythagorean theorem
• quad theorem

Tags

CCSS.8.G.A.5

A polygon with congruent angles and sides. (a)  

• sphere
• regular polygon
• cube
• irregular polygon

Tags

CCSS.2.G.A.1

Having the same size and shape. (a)  

• vertical
• adjacent
• similar
• congruent

Tags

CCSS.8.G.A.2

A triangle with at least two congruent sides. (a)  

• equilateral triangle
• scalene triangle
• isosceles triangle
• right triangle

Tags

CCSS.4.G.A.2