BEST Analyze Geometric Figures Vocabulary

A triangle with all interior angles smaller than 90°.

• Acute Rectangle

• Acute Rhombus

• Acute Triangle

• Obtuse Triangle

The point farthest from the base of a figure.

• Base

• Cone

• Cylinders

• Apex

The face of a solid that is used to name the solid.

• base

• apex

• cone

• cylinders

A solid figure with a circle as its base and a curved surface that meets at a point.

• apex

• base

• cone

• cylinder

A figure containing two congruent, parallel, circular bases whose edges are connected by a perpendicular curved surface.

• apex

• base

• cone

• cylinders

In a figure, the segment or curve where two faces intersect.

• base

• cone

• cylinders

• edge

A triangle with three equal-length sides and three 60-degree interior angles. Also known as an equiangular triangle.

• acute triangle

• equilateral triangle

• isosceles triangle

• obtuse triangle

A flat or curved surface of a solid figure.

• edge

• face

• base

• angle

A triangle containing at least two equal length sides and two equal interior angle measures. Sub-class INCLUDES equilateral triangles.

• equilateral triangle

• isosceles triangle

• obtuse triangle

• acute triangle

A triangle containing one interior angle larger than 90°

• equilateral triangle

• obtuse triangle

• acute triangle

• isosceles triangle