Geometry Vocabulary Words

acute angle

acute triangle

altitude

angle

arc

center

central

chord

circle

circumference

complementary angles

cone

congruent

coordinate

coplanar

cosine

cylinder

degree

diameter

distance

equiangular triangle

equilateral triangle

equivalent

exterior angle

geometric mean

inscribed

isosceles triangle

measure

median

midpoint

obtuse angle

obtuse triangle

parallel

parallelogram

perimeter

polygon

polyhedron

prism

proportion

pyramid

quadrilateral

radius

ratio

ray

rectangle

rectangular

regular polygon

rhombus

right angle

right triangle

scalene triangle

secant

sector

segment

similarity

sine

slope

sphere

square

sum

surface area

tangent

transformation

transversal

trapezoid

triangle

unequal

vertical angle