geometry quiz #1

point

A point has no dimension it is represented by a small dot

line

A line that has one dimension it is represented by a straight line with two errors to indicate that it extends without

plane

A plane has two dimensions of flat surface that goes on forever in all directions

colinear

Points on the same line

coplanar

Points on the same plane

segment

A line that has end points

Ray

Has an initial point in extends One Direction

congruent

Having the same shape and size

midpoint

The point that divides by six segment into two congruent segments

segment bisector

A segment, Ray, line, or playing the intersex a segment at its midpoint

segment addition postulate

If a point is between two and points on a line segment then two smaller parts add up to the whole segment

circle

Around shape with no edges or corners every point on the circle is equidistant from the center

equilateral

All sides are the same length

equiangular

All angles are the same measure

isosceles

A shape that has two sides that are the same length

Scalene

All sides are different lengths and all angles are different too

perpendicular

Lines that interceptive form a 90° angle

angle

two rays to have the same initial point the rays are the size and the initial point is the vertex

acute

An angle that measures between zero and 90°

right

An angle that measure is 90°

obtuse

An angle that measures between 90 and 180

adjacent angles

angles that share a common side in vertex will have no common interior points

vertical angles

angles that are across from each other when two lines cross, they are always equal in measure

complementary angles

Two angles whose measures add up to be 90

supplementary angles

Two angles whose measures add up to be 180°

linear pair

Two angles that are next to each other and form a line. Their angle always measures up to 180.

angle bisector

Array that divides an angle into two equal angles

angle addition postulate

If a point is inside an angle, then two smaller angles at up to the whole angle

rigid motion

A transformation where the shape moves, but doesn’t change size or shape

directed line segment

A line segment that has a starting point and an end point in shows direction

reflection

Flip a figure over a line like looking in a mirror

translation

Moves a figure from one place to another it just slides

rotation

Turn a figure around a point