recognise types of angles
smaller than 90degrees=?
bigger than 180 but smaller than 360degrees=?
bigger than 90 but smaller than 180degrees=?
90 degrees=right angle.
smaller than 90degrees=acute angle.
bigger than 180 but smaller than 360degrees=reflex angle
bigger than 90 but smaller than 180degrees=obtuse angle.
parrallel and perpendicular lines and angles
vertically opposite angles are...?
Alternate angles are..?
corresponding angles are...?
whats the tranversal line..?
definition of perpendicular..?
- a line that cuts through parallel lines
-at right angles; two lines at right angles to eachother
Recognise triangle types
Isosceles-2 sides are congruent
Equilateral-all the sides are congruent, all angles are congruent
Scalene-none of the sides are congruent, no congruent angles
Right triange-right angle(90degrees)
Expanding brackets, and collecting like terms.
a(a) = ?
5(2) = ?
5(a) = ?
a(b) = ?
5(a+2) = ?
a(a) = a*a = a to the power of 2.
5(2) = 5*2 = 10
5(a) = 5*a = 5a
a(b) = a*b + ab
5(a+2) = 5a+10
5(a) + 5(2) = 5a + 10
Area of triangles, trapeziums and kites.
Area of a triangle?
Area of a trapezium?
Area of a kite?
Area of triangle = bass times height divided by 2
Area of a kite= half the product of its diagonals.
Area of a trapezium=half the sum of the parrallel sides times the perpendicular height
Circumfrence using pie=3.14
whats a circumfrence?
whats the radius?
whats the diameter?
whats the tangent line?
circumfrence=perimetre of a circle
radius=distance from centre of a circle to the exterior
diameter=twice the size of the radius, chord which passes through the centre
tangent line= the line that goes all the way around the circle on the outside
To find the Circumfrence= pie times diamerter (pie*d) = 3.14*7
C=pie*d divided by 2 then make sure to ADD the diameter.
shapes and there angle measurements
technical terms for linear graphs
c= y intercept
TIP: WHAT EVER YOU DO TO ONE SIDE YOU HAVE TO DO TO THE OTHER.
left with a=5 = the answer
B << always start from bottom <<<
C GRADE EXAMPLE
-- = ----
-- * --- = 2y
---- = 2y
12 = 2y
y = 6