Parallel and Perpendicular Lines
Angles & Parallel Lines
Interior Triangle Angles
Exterior Angles of a Triangle
Similar Triangles
100
Two lines that have the same gradient.
Parallel lines
100
True or False.
If two parallel lines are cut by a transversal, then corresponding angles are congruent
True
100
The sum of all three angles of any triangle.
180 degrees
100
The sum of the two non-adjacent interior angles in a triangle add up to this.
An exterior angle
100
Two triangles that have the same shape but are different in size.
What are similar triangles?
200
What angle do two interesting perpendicular lines make?
90 degrees
200
What is the supplementary angle to 62 degrees?
118 degrees
Supplementary angles add up to 180 degrees.
200
What is each angle measurement, if all three angles are the same in a triangle?
60 degrees
200
The value of x. 
149
200
True or False, these two triangles are similar. AND WHY.
True.
Because they share at least two congruent angles.
300
What is the perpendicular gradient to m = 2?
m = -1/2
300
True or False.
When two lines intersect, adjacent angles are congruent.
False.
They are supplementary - add up to 180 degrees.
300
The measure of the third angle in a triangle:
30, ___, 90
60 degrees
300
The value of angle E. 
77 degrees
300
True or False, these two triangles are similar. AND WHY.
True.
Because the third angle in each triangle is equal to the second angle in the other triangle, which results in at least two congruent angles that they share.
400
The product of the gradients of two perpendicular lines is equal to ______.
- 1
400
The measurement of angle b. AND WHY.
40 degrees.
Because angle a is supplementary to 140 degrees, and angle a and b are Alternate Interior Angles, which are congruent.
400
The measure of the third angle in a triangle:
22, 34, ___
124 degrees
400
The value of y. 
10
400
The value of x
What is 5?
500
Are the lines 2x + y = 8 and y = 2x + 5 parallel? Prove your answer.
No.
m1 = -2
m2 = 2
500
True or False, These are parallel lines cut by a transversal. AND WHY.
False.
Because angle a is alternate exterior angles with the 150 degree angle and therefore congruent, and 150 and 40 do not add up to 180.
500
The value of x.
45
500
The value of x. 
7
500
The value of h
What is 15 feet?