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Mathematics > Geometry > Flashcards

Geometry Flashcards

1
Q

These angles extend outward within a shape.

A

Exterior angles

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2
Q

How do we calculate the area of a rectangle?

A

Multiply it’s length and width

OR

Base x height

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3
Q

How do we calculate the area of a square?

A

x^2

Or multiply the given measurement by itself

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4
Q

What is the difference between the perimeter and an area?

A

Area is the entirety or the inside of a shape/surface

But the perimeter is the border line only

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5
Q

How do we get the perimeter of a square?

A

4(sides)

or multiply the length of a one side by 4

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6
Q

How do you calculate the area of a triangle?

A

1/2 base x height

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7
Q

How do we calculate the area of a trapezoid?

A

1/2 (base 1 + base 2) x height

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8
Q

What do you call the perimeter of a circle?

A

A circumference

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9
Q

What formula should we use to calculate the area of a circle?

A

πr^2

pie radius squared

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10
Q

How do we calculate the circumference of a circle?

A

2 π r

two x pie x radius

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11
Q

How do we calculate the curved surface of a cylinder?

A

2 π r h

r = radius
h = height

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12
Q

This triangle has no equal sides

A

Scalene Triangle

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13
Q

How do we calculate the total surface of a cylinder?

A

2 π r (r+h)

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14
Q

how do we calculate the volume of a cylinder?

A

π r^2 h

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15
Q

This triangle has an angle that falls under 90 degrees

A

Acute Triangle

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16
Q

What is the difference between an area and a volume?

A

Area is 2 dimensional

while, Volume is 3 dimensional

17
Q

How do we calculate the curved surface area of a cone

A

π r l

l = length
r = radius

18
Q

how do we calculate the total surface area of a cone?

including the extended formula

A

π r (r + l)

Extended formula:

π r [ r + √ (h^2 + r^2)]

19
Q

This triangle consists of one perpendicular line or has a 90 degrees angle

A

Right Triangle

20
Q

How do we calculate the volume of a cone?

A

1/3 • π r^2h

22
Q

This triangle has one angle that extends above 90 degrees

A

Obtuse Triangle

23
Q

How do we calculate the surface area of a sphere?

A

4 π r^2

24
Q

How do we calculate the volume of a sphere?

A

4/3 x π r^3

25
Q

How do we calculate the volume of square based pyramid?

A

1/3 A•h

A = area of the base
h = height of the pyramid

25
Q

how do we calculate the surface area of a square based pyramid

A

a^2 + 2al

a = side of the base
a^2 = area of the base
l = slant height

26
Q

This type of triangle has two equal sides

A

Isosceles Triangle

27
Q

What is this type of triangle where all it’s sides are equal?

A

Equilateral Triangle

28
Q

Supplementary angles add up to?

A

180 degrees

30
Q

These angles extend/falls inward inside the shape

A

Interior Angles

31
Q

How do you calculate the sum of all interior angles of any polygon?

A

180 degrees • (n -2)

n = number of sides the polygon has

Mathematics (7 decks)

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