acute angle	acute triangle	adjacent angles
altitude of a triangle	angle	chord of a circle
circle and radius	complementary angles	circumscribed triangle
concentric circles	cone	congruent triangles
right cylinder	equilateral triangle	regular hexagon
irregular pentagon	hypoteneuse	kite
major arc	obtuse angle	opposite rays
parallel lines	parallelogram	perpendicular lines
prism	regular pyramid	rectangle
right triangle and legs	secant of a circle	similar triangles
point	line	angle
space	sphere	straight angle
supplementary angles	tangent to a circle	trapezoid
two lines and a transversal	vertical angles	alternate interior angles
corresponding angles	apothem	axes
quadrilateral	square inscribed in a circle	exterior angle of a triangle