Geometric Figures
Triangles
Transformations
Congruence
100
This geometric figure extends infinitely out of both sides.
What is a line?
100
This triangle's sides and angles are all equal.
What is an equilateral triangle?
100
This transformation flips a figure over the y or x-axis to create a mirror image.
What is a reflection?
100
Two figures that have the same shape and size are said to be this.
What is congruent?
200
This part of a line starts at one point and continues forever in one direction.
What is a ray?
200
The sum of all angles in a triangle.
What is 180°?
200
This transformation maps A to A'
What is a translation 4 units up?
200
The value of X
What is 50°?
300
This figure has two endpoints and includes all the points between them.
What is a line segment?
300
This theorem states that the square of the hypotenuse of a right triangle equals the sum of the squares of the other two sides.
What is the Pythagorean Theorem?
300
This transformation turns a figure around a fixed point, usually the origin.
What is a rotation?
300
The value of x
What is 50°?
400
Two lines that intersect to form right angles are called this.
What are perpendicular lines?
400
This side of the triangle DEF is also referred to as the base (Hint: Express your answer as DE, EF, or DF)
What is line DF?
400
Describe the transformation (blue triangle is the original, red triangle is the transformed)
What is a rotation 90° clockwise or 270° counterclockwise?
400
This point splits a line or line segment into 2 congruent parts
What is the midpoint?
500
The point where two rays meet to form an angle is called this.
What is the vertex?
500
Find t
What is 5?
500
Under a reflection across the y-axis, the point (x, y) is mapped to this new point.
What is (−x, y)?
500
The value of X. (Hint: Look at the dashes on the lines)
What is x=5?