Vocabulary
Angles
Triangles
Transformations
Miscellaneous
100
Two adjacent angles that equal 180 degrees.
What are supplementary angles?
100
Angles that measure less than 90 degrees.
What is acute?
100
This is the sum of the three angles in ANY triangle. (In other words, this is what you get when you add the three angles of a triangle together)
What is 180 degrees?
100
If I move in a circle from left to right, I'm moving in this direction.
What is counterclockwise?
100
This value is always written first when we write coordinates for a Cartesian plane.
What is X?
200
Lines that are next to each other but will never intersect. In downtown Montreal, Ste-Catherine Street and Sherbrooke Street are examples.
What are parallel lines?
200
A straight line will always equal this measurement.
What is 180 degrees.
200
In triangle ABC *angle A = 90 *angle B = 30. What is the measurement of angle C?
What is 60 degrees?
200
When doing a translation, if I move 3 to the right and 4 down, I am translating by this value. Translating by (?, ?)
What is (3, -4)?
200
The three angles of this polygon will always equal 180 degrees.
What is triangle?
300
A line that cuts something into two equal pieces.
What is a bisector?
300
This type of angle is formed by two perpendicular lines and measures 90 degrees.
What is a right angle?
300
In triangle XYZ: * Angle X is a right angle * Angle Y = 60 degrees This is the measurement of angle Z.
What is 30 degrees?
300
When doing reflections, it is important to remember that the X axis is the same as this.
What is Y = 0
300
The original meaning of this mathematical word is "many sides".
What is polygon?
400
Two angles that are equal in measurement.
What is congruent?
400
Angle ABC and angle DBE are complementary. If angle ABC = 80 degrees, this is the measurement of angle DBE.
What is 10 degrees?
400
In triangle FGH: * Angle F = 30 degrees * Angles F and G are congruent This is the measurement of angle H.
What is 120 degrees?
400
If I have to reflect something along X = 3, my reflection line should be (pick one: horizontal, vertical or diagonal).
What is vertical?
400
In the northern hemisphere, the water in a drain or toilet always goes in this direction.
What is counterclockwise?
500
Two adjacent angles that equal 90 degrees when their measurements are added together.
What are complementary angles?
500
Angle GHI and angle KHL are supplementary. If angle GHI = 105 degrees, this is the measurement of angle KHL.
What is 75 degrees?
500
In triangle LMN: * angle L is acute * angle M is right Angle N must be this type of angle.
What is obtuse?
500
I have a small polygon in quadrant 1. If I rotate it 90 degrees about the origin, it should end up in this quadrant.
What is quadrant 2?
500
This idiomatic expression, derived from geometry, means "to change your mind completely about something".
What is "to do a 180"?
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