What is a Translation
A statement that is accepted as a fact
What is a postulate?
For this transformation, change the signs of both the x and y coordinates.
What is the rule for a 180 degree rotation
Who are adjacent angles?
What is a compass?
A triangle that follows the rule a2+b2=c2 for its side lengths.
What is a right triangle?
When a figure can rotate less than 180 degrees and map onto itself, it has this type of symmetry
What is rotational symmetry?
What is perpendicular lines?
A ray that divides an angle into two congruent angles
What is an angle bisector?
A transformation that preserves both lengths and angle measures.
What is a rigid motion?
(Or, What is an isometry?)
A conjecture that must be proven using previously known information
What is a theorem?
If two angles are complementary then they add to 90. Angles A and B are complementary.
Drawing a conclusion from this, is based on this type of reasoning.
What is deductive reasoning.
A theorem that states that if two angles are a linear pair, then they are supplementary.
What is the linear pair theorem?
What are parallel lines?