Geo Vocab 1-10 to 1-20

Conjecture: A reasonable guess that you are trying to either prove or ____.

• disprove

• ignore

• accept

• confirm

Assertion: A statement that you think is true but have not yet ____.

• proven

• verified

• confirmed

• filled in the blank

Theorem: A general proposition proved by a chain of ____.

• deductions

• guesses

• assumptions

• opinions

Congruent: One figure is called congruent to another figure if there is a sequence of translations, rotations, and reflections that takes the first figure onto the second. Does not change ____ or ____.

• size or shape

• color or texture

• position or orientation

• material or weight

If a transformation takes a polygon to another position and/or orientation, then A is the original and A’ is the ____.

• image

• vertex

• angle

• side

Rigid Transformation: A rigid transformation is a translation, rotation, or reflection. We sometimes also use the term to refer to a sequence of ____.

• transformations

• translations

• rotations

• reflections

Reflection: A reflection is defined using a line. It takes a point to another point that is the same distance from the given line, is on the other side of the given line, and so that the segment from the original point to the image is perpendicular to the given ____.

• line

• point

• angle

• circle

Directed Line Segment: A line segment with an arrow at one end specifying a ____.

• direction

• length

• color

• thickness

Translation: A translation is defined using a directed line segment. It takes a point to another point so that the directed line segment from the original point to the image is parallel to the given line segment and has the same length and ____.

• direction.

• width.

• height.

• angle.

Rotation: A rotation has a center and a directed angle. It takes a point to another point on the circle through the original point with the given center. The 2 radii to the original point and the image make the given ____.

• angle

• line

• circle

• point