# Math Geometry vocabulary

## 24 terms · Math vocabulary

### Point

a geometric element that has position but no extension

### line

a straight path that extends without end in opposite directions

### collinear

points that lie on the same line

### non collinear

points that do not lie on the same line

### ray

extend or spread outward from a center or focus or inward towards a center

### end point

The point at the segment or ray

part of a line

### plane

an unbounded two-dimensional shape

### parallel lines

coplanar lines that do not intersect

### intersecting lines

lines that cross at one point

### perpendicular lines

Lines that intersect to form right angles

### skew lines

lines that lie in different planes. they are neither parallel or intersecting

### midpoint

a point that divides a segment into two congruent segments

### congruent segments

Segments that have the same length

### angle

two rays with a common endpoint

### vertex

The common endpoint of an angle

### protractor

drafting instrument used to draw or measure angles

### degrees

used to measure temperature, latitude, longitude, right ascsension, and declination

### congruent angles

Angles that have the same measure

### right angles

angles that measure 90 degrees

### obtuse angles

angles more than 90 degrees

### acute angles

angles that are less than 90 degrees

### complementary angles

Two angles whose sum is 90 degrees

### supplementary angles

Two angles whose sum is 180 degrees

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