Chapter 1 Vocabulary-Geometry

Angles whose measures are less than 90

• acute

• obtuse

• right

• straight

Two angles whose sum of their measures is 90

• supplementary

• complementary

• vertical

• adjacent

a geometric figure with no dimension, represented by a dot

• line

• ray

• point

• segment

angle whose measure is greater than 90 and less than 180

• acute

• obtuse

• right

• straight

a geometric figure with 1 dimension extending in opposite directions

• line

• point

• plane

• angle

two angles whose sides are opposite rays

• adjacent

• congruent

• supplementary

• vertical

part of a line with two endpoints

• line

• ray

• point

• segment

two angles whose sum of their measures is 180

• supplementary

• complementary

• vertical

• adjacent

an angle whose measure equals 90

• acute

• obtuse

• right

• straight

a geometric figure with 2 dimensions extending in all directions

• point

• line

• plane

• angle