Chapters 11-12 Flashcards
the perpendicular distance between any two parallel bases
height of a parallelogram
any side of a parallelogram can be called this
base of a parallelogram
can be any side of a triangle
base of a triangle
the length of an altitude drawn to a given base
height of a triangle
the perpendicular distance between its bases
height of a trapezoid
a region of a circle bounded by a central angle and its intercepted major or minor arc
sector of a circle
the region bounded by an arc and a chord
segment of a circle
a segment drawn from the center of a regular polygon perpendicular to a side of the polygon
apothem
has its vertex at the center of the polygon and its sides pass through consecutive vertices of the polygon
central angle of a regular polygon
corner views of 3d geometric solids on 2d paper
isometric views
the intersection of a solid and a plane
cross section
faces that are not bases
lateral faces
lateral faces intersect each other at this
lateral edges
lateral faces intersect the base at these
base edges
a perpendicular segment that joins the planes of the bases
altitude
the length of the altitude
height
the sum of the areas of the lateral faces
lateral area
the segment with endpoints that are centers of the circular bases
axis
has a base that is a regular polygon and the altitude has an endpoint at the center of the base
regular pyramid
the height of each lateral face
slant height
if the axis is also the altitude, then the cone is this
a right cone
if the axis is not the altitude, then the cone is an ______
oblique cone
if the circle contains a center of the sphere, the intersection is called this
great circle
the endpoints of a diameter of a great circle are called these
poles