5th Grade STAAR Vocabulary

Front

point

Back

an exact location

Front

line

Back

a straight path that extends without end in opposite directions

Front

plane

Back

a flat surface that extends without end in all directions

Front

line segment

Back

two endpoints and all the points between the endpoints

Front

ray

Back

one endpoint and extends without end in one direction only

Front

angle

Back

formed by two rays with a common endpoint

Front

vertex

Back

the common endpoint

Front

acute angle

Back

an angle that measures less than 90 degrees

Front

right angle

Back

an angle that measures exactly 90 degrees

Front

obtuse angle

Back

an angle that measures more than 90 degrees and less than 180 degrees