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Geometry > FSA > Flashcards

FSA Flashcards

1
Q

what do complementary angles equal?

A

90

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2
Q

Supplementary angles =

A

180

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3
Q

What is an adjacent angle?

A

Share a vertex and a side, but no interior points

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4
Q

what do congruent angles have?

A

The same measure

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5
Q

vertical angles are

A

congruent

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6
Q

what is sin?

A

Opposite/Hypotenuse

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7
Q

What is cos?

A

c= adjacent/hypotenuse

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8
Q

What is tan?

A

t= opposite/adjacent

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9
Q

use inverse-1 sign when…

A

finding angle of a measure in a right triangle

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10
Q

what is the pythagorean theorem?

A

to find hypotenuse of right triangle

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11
Q

what is the slope formula?

A

y2-y1/x2-x1

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12
Q

what is the equation of a circle?

A

c= (h,k) (x-h)2 + (y-k)2

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13
Q

what is the rule for reflection of x-axis?

A

(X,y) = (x,-y)

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14
Q

Reflection of y-axis

A

x,y = -x,y

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15
Q

reflection of y=x

A

x,y = y,x

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16
Q

reflection of y=-x

A

X,Y = -y,-x

17
Q

rotation 90 degree cc

A

x,y = -y,x

18
Q

180 rotation

A

x,y = -x,-y

19
Q

rotation 270

A

x,y = y,-x

20
Q

What is the midpoint formula?

A

m= x1+x2/2 y1+y2/2

21
Q

What does an equilateral triangle have

A

Three equal angles

22
Q

What does an isosceles triangle have

A

Two equal angles

23
Q

What does a scalene triangle have

A

Three different angles

24
Q

What does the sum of interior angle measure in a triangle

A

180

25
Q

What is the measurement exterior angle of a triangle equal

A

The sum of the interior angle measures

26
Q

What is the sum of an exterior angle measure of a convex polygon

A

360

27
Q

What is the formula for the sum of interior angles of a polygon

A

(n-2)180

28
Q

What is the formula to find the length of an arc

A

l= m/360 (C)

29
Q

What is the formula to find the diameter of a circle

A

d=2r

30
Q

What is a polyhedron?

A

3-d figure made up of flat surfaces

31
Q

What is the law of sines?

A

a/sin (A) = b/sin (B) = c/sin (C)

32
Q

what is the law of cosine?

A

a^2=b^2+c^2 -2(b)(c) cos (A)

33
Q

What is the formula for surface area of a cylinder?

A

SA= Atop+Abottom+Aside

34
Q

What is the surface area formula for a prism

A

SA= sum of faces

35
Q

What is the surface area formula for a pyramid

A

SA= 1/2bh

= sum of faces

36
Q

What is the surface area formula for a cone

A

SA= B+L.a
= area of base + lateral area
= 3.14r^2 + 3.14rs

37
Q

If a triangle has two angle measures and one side length which law do you use

A

Law of sines

38
Q

If a triangle has one angle measure and two side lengths which law do you use

A

Law of cosines

Geometry (3 decks)

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