Third Year Flashcards
(24 cards)
Line
Goes through 2 points and continues in in both directions
Line segment
A between two points
Ray
A line that starts at a point and continues after
Perpendicular lines
Lines that meet at 90 degrees
Parallel lines
Lines that will never meet
Collinear points
Points that are on the same line
Supplementary angles
Angles that add up to 180 degrees
Complementary angles
Angles that add up to 90 degrees
Axiom
A statement without proof
A straight line is 180 degrees
There is exactly one line through any two points
Plane
Flat 2D surface
It has no thickness
Corollary
A statement that follows on from a theorem
Each angle is a semi-circle is a right angle
Converse
A statement made by reversing a theorem
If P = Q
Converse: Q = P
Theorem
A statement with proof
The angles in a triangle add up 180 degrees
In a parallelogram, opposite sides and opposite angles are equal
Congruent triangles
Triangles that are the exact same
SSS, ASA, SAS, RHS
Axes of symmetry
Imaginary folding line that divides objects evenly
Centre of symmetry
Where more than one axis of symmetry meets
Similar triangles
Triangles with the same angles, sides are proportional
Cyclic Quadrilaterals
Opposite sides are equal to 180 degrees
Equiangular
All angles are equal
Trial
Act of doing experiments
Outcome
Possible answer
Event
Occurrence of particular outcome
Expected frequency
Number of trials X probability/relative frequency
How many cards in a deck
52
