Types of Angles
How many degrees is a straight angle?
180
Find a in the shape. Q2
50o
Define parallel lines
Two lines that never meet. They are the same distance apart across their entire distance.
9 + x = 15
x = 6
3(x + 4)
3x + 12
A full revolution is how many degrees?
360
Find a in the shape. Q3
110o
Describe how angle a relates to the given angle by stating if it is corresponding, alternate or co-interior. Q7.
Corresponding
2x + 5 = ?
2x + 5 = 15
Expand the brackets below
5(x+5) + 20
5x + 45
Identify the type of angles shown. Q1.
Reflex angle
Find the value of a and b in the shape. Q4
a = 90
b = 15cm
Find the value of a. Q8.
50
Solve the following equation algebraically.
2x - 9 = 11
x = 10
10(x - 4) + 8x = 14
x = 3
If two angles make an "F" shape, what do we call them and what is the rule for these two angles?
Corresponding angles, always equal
Find the value of a and b in the shape. Q5
a = 40
b = 140
Find the value of a. Q9.
145
m = 11
4(3x + 5) = 116
x = 8
Explain the rule for co-interior angles
supplementary - add up to 180
Q6 find the values of angles a and b in the shape below.
b = 135
a = 130
Find the value of a and b. Q10.
a = 50
b = 130
Patienze does some babysitting on the weekends for some family friends. She charges $15 for every hour. On one job she earns $60.
If a equals the number of hours that Patienze worked, complete this question:
Hourly rate x number of hours worked = money earned
_______ x a = $60
15a = 60
Sakrett mows the lawns for her neighbours on the weekends. She charges $30 to attend a job, and then charges an extra $10 an hour. On one job, Sakrett earns $70.
If a is the number of hours worked. Complete the algebraic equation that describes this problem.
$_______ + _______a = $__________
$30 + $10a = $70