Geometry Stuff
Geometry Vocabulary
Terms
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- Area of Rhombus
- 1/2(m)(n)
- Circumference of a Circle
- 2 π r or π d
- Surface Area of a Cone
- SA = πre + πr^2
- Base Area for a Regular Polygon Prism
- B = 1/2nla where n:# of sides, l:length of each side, a:apothem
- Probability
- a number from 0 to 1 that represents the chance that an event will occur
- Sector
- The portion of a circle that is bound to two radii and the arc intercepted by the radii
- Lateral Area of a Cylinder
- LA = (2*pi*r)h
- Surface Area of a Pyramid
- SA = 1/2pe + B
- Surface Area of a Sphere
- SA = 4πr^2
- π - Pi (estimate)
- 3.1415
- Area of Square
- a^2
- Volume
- the amount of space a figure encloses
- Supplementary
- angles add up to 180 degrees
- Prism
- can have bases that can be any type of polygon as long as the bases are congruent and parallel
- Area of a Regular Polygon
- 1/2(h)(n)(a)
- Perimeter of Square & Rhombus
- 4a
- Area of a Sector of a Circle
- πar^2 divided by 360
- Symmetry
- Exact correspondence of form and constituent configuration on opposite sides of a dividing line or plane or about a center or an axis.
- Area of a Rectangle
- (a)(b)
- Area of a Circle
- πr^2
- Volume of Pyramid & Cone
- 1/3 Bh
- Cosine (cos)
- adjacent leg over hypotenuse
- Area of Trapezoid
- (1/2)h(a + b)
- Surface Area
- SA= LA + 2B B:base area
- Translations
- Shifting a geometric shape up, down, left, and/or right.
- Dilation
- To make something bigger or smaller
- Area of Right Triangle
- 1/2(a)(b)
- Lateral Area (formula)
- LA = ph where p:base perimeter & h: prism height
- Base Area of a Cylinder
- use circumference, B = 2πr^2
- Complementary
- angles add up to 90 degrees
- Sine (sin)
- opposite leg over hypotenuse
- Area of Parallelogram
- (h)(b)
- Perimeter of a Rectangle & Parallelogram
- 2L + 2w or 2(L + w)
- Area of Triangle
- 1/2(b)(h)
- Surface Area
- represents the area that we can "feel" around a shape
- Surface Area of a Cylinder
- SA = (2πrh) + (2πr^2)
- Lateral Area of a Pyramid
- LA = 1/2pe e=slant height
- Tangent (tan)
- opposite leg over adjacent leg
- Lateral Area of a Cone
- LA = 1/2(2πr)e = πre
- Lateral Area
- the area if you would go around the sides
- Volume of Sphere
- (4/3) πr^3