Year10 1st Exam Flashcards
How many triangles in a 8 sided shape ?
6
How do you find the number of triangles in a shape ?
Number of sides minus 2 times 180
What do all exterior angles add up to ?
360
What letter is used for the term corresponding and what do angles on this letter do
Letter = F
angles are all the same on this
What is the letter for co-interior and what do angles do on this letter
Letter= c
Angles add to 180
What term does the letter Z represent and what do angles do on this letter
Alternate
Angles are the same
Define what a bearing is
Bearings are a measure of direction Taken from north
How would you solve 2a+4=10
First you would minus the +4 on each side which would give you 2a=6 then you would divide both sides by two to get a so a would equal 3
What do you have to do to a equation with two letters eg - 3t+2=2t+6
You would minus the smallest letter then do the sum as normal
What is a prime number
A number hat is divisible by one and itself
How do you find the HCF?
You multiply the numbers in the overlap of a Ben diagram
What does a +plus a - equal ?
A negative
What does a + plus a+ equal?
A positive
What does a - plus a- equal ?
A positive
What does this symbol mean ~
Approximately
Define each letter of BIDMAS?
Brackets Indicies Division Multiplication Addition Subtract
78% as a fraction in its simplest form ?
- 39
—- —— - =. 50
How do you divide a fraction ?
Flip the last number and change the sign to a multiplication instead of division
How do you multiply a fraction
Top x top
Bottom x bottom
How do you add or subtract a fraction ?
Match the two denominators
Define equation
An expression containing a equals sign ( something that can be solved)
Define expression
Collection of mathematical symbols eg - (3a+b)
Define formula
An equation involving mesurables ( D=SxT)
Define identity
An equation is the same on both sides of the equals sign
What does the dot on top of a number mean ?
Recurring
Pythagoras Theorem =
Asquared + Bsquared =csquared
What are the 3 sides of a triangle and where are they found on it ?
Hypotenuse = longest side opposite right angle
Opposite = side opposite the angle changes depending on where the angle is
Adjacent =line next to the angle changes based on location of angle
SIN=
Sin= opposite
—————
Hypotanuse
SOH
S=O\H
COS=
Cos = Adjacent
—————
Hypotanuse
CAH
C=A/H
TAN=
Tan = opposite
—————
Adjacent
TOA
T=O/A
Remember
Sin=SOH
cos =CAH
Tan=TOH
SOH
CAH
TOA
