Unit 7: Geometry Vocabulary

Term
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base of a triangle
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Terms in this set (24)
base of a triangle
The side of a triangle which is perpendicular to the altitude.
Image: base of a triangle
cube
A regular solid having six congruent square faces.
Image: cube
hexagon
6 sided polygon
Image: hexagon
perpendicular lines
Two lines that intersect to form right angles
Image: perpendicular lines
parallel planes
planes that do not intersect
Image: parallel planes
pentagon
5 sided polygon
Image: pentagon
right rectangular prism
a prism where all of the lateral faces are rectangles.
Image: right rectangular prism
area of a triangle
A= 1/2 b h
Image: area of a triangle
area of a rectangle or square
A= L * W
Image: area of a rectangle or square
parallel lines
2 lines that will never intersect
Image: parallel lines
vertexA point where two or more straight lines meet.edgeThe line along which two surfaces of a solid meet.polygon2D shape with straight lines, and enclosedArea of a rhombus/kiteA= 1/2 (d1 x d2)Area of a trapezoidA= 1/2 (b1 + b2) hVolume formula for a rectangular prismV= LxWxHFractional edge lengthThe length of each edge of the cube is a fraction.Rectangular Prism Net2 rectangular bases, 4 rectangular facesTriangular Pyramid/Tetrahedron net1 triangular base, 3 triangular facesTriangular Prism net2 triangular bases, 3 rectangular facesCylinder Net (not a polyhedron)A solid shape with one curved surface and two congruent circular bases.Polyhedrona solid figure with many plane faces. Straight edges.Area of a shape- 2Dthe number of square units inside a shapeVolume of a shape- 3Dthe number of cubed units inside a shape