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28 Cards in this Set
- Front
- Back
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If X^2 > a^2 If X^2< a^2 |
If X^2 > a^2 then X>a or X< -a If X^2< a^2 then -a<X<a |
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Proving triangles are congruent |
SSS AAS(the same side) SAS(two sides and the angle between) RHS( right angle, hypotenuse,and other side) |
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Vol of pyramid and cone |
1/3 X base X vertical height 1/3 X pie radius^2 X vh |
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1litre = 1000ml= 1000cm^3 |
Yes. |
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Y=k^x |
Aways goes through X is 0 y is 1 |
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And rule |
(can both happen at same time ) You mutliply |
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Or rule |
Mutually exclusive, can't happen together You add |
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A U B |
Union of both sets, everything in both circles |
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A n B |
Where circles overlap |
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Cumulative frequency |
Plotted with highest frequency in each class |
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Frequency Density = |
Frequency /class width |
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When finding mean on histograms wot do u do (order of things) |
Find frequency density, frequency, mid interval values(add and divide by 2) , frequency times mid interval values |
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Sum of exterior angles |
360 |
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Sum of interior angles |
(n-2 X 180) |
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Exterior angles (regular polygons) |
360/N |
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Interior angles |
180- exterior angle |
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Frequency polygon |
Frequency of each class is plotted against mid interval value with straight lines |
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SIMILIAR shapes |
All angles are the same. All three sides are proportional, scale factor Any two sides are proportional and angle between is same |
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For reflections what must you give |
The equation of the mirror line |
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For enlargement what must you.specify |
The centre of enlargement and scale factor |
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Surface area of a cone |
πrl + πr^2 |
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Surface area of a cylinder |
2πrh + 2πr^2 |
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Area of a sector |
X/360 X area of full circle (X is the angle.of part u want ) |
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Length of arc |
X/360 X circumference of full circle |
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Front elevation |
What you see from directly Infront |
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Plan |
What you see from directly above |
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Side elevation |
The view you see from directly to one side |
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Bearings |
Put pencil on the " from " At the point you are going from draw north line Draw in angle clockwise from northline , this is the required bearing |
