gerwhergt Flashcards
is a figure formed by three segments joining three noncollinear points
Triangle
The side opposite the right angle is the _____ of a right triangle
Hypotenuse
____ to a theorem is that can be proved easily using the theorem
Corollary
The congruent sides of an isosceles triangle are called___ and the third side is called the ____
Legs, base
a point that joins two sides of a triangle is called
vertex
a segment from a vertex of a triangle to the midpoint of its opposite side is called an
median
when two figures are ____ their corresponding sides and their corresponding angles are congruent
congruent
if a point is on the ___ of a segment then it is equidistant from the endpoints of the segment
perpendicular bisector
if a point is on the angle bisector of an angle then it is ___ from the two sides of the angle
equidistant
a polygon is ____ if no line that contains a side of the polygon passes through the interior of the polygon
convex
a polygon is ____ if all its interior angles are congruent
regular
if a polygon is equilateral and equiangular then it is
equiangular
the ammount of surface covered by a figure is its
area
the ___ of a triangle is the perpendicular segment from a vertex to the line containing the opposite side of the triangle
height
either pair of parallel sides of a parallelogram are called the ____
opposite sides
a ____ is the set of all points in a plane that are the same distance from a given point
circle
the distance across a circle through its center is the
diameter
polyhedral are named by the shape of their
faces
the ____ of a polyhedron is the sum of the areas of its faces
surface area
a_____ is a polyhedron with two congruent faces that lie in parallel planes
prism
the ____ of a prism are the faces of the prism that are not bases
lateral faces
the ___ of a solid is the number of cubic units contained in its interior
volume
is the quadrilateral with both pairs of opposite sides parallel
trapezoid
is a plane figure that is formed by three or more segments called sides
polygon
is a parallelogram with four congruent sides
rhombus
is a parallelogram with four right angles
rectangle
a parallelogram with four congruent sides and four right angles is
square
is a quadrilateral with exactly one pair of sides parallel
parallelogram
each endpoint of the sides of a polygon is called
vertex
a segment that joins two nonconsecutive vertices of a polygon is called
diagonal
the nonparallel sides of a trapezoid are called its ____ and the parallel sides are called its bases
legs
is an expression written with a radical symbol
radical
the number or expression inside the radical symbol is the
radicand
is a ratio of the lengths of two sides of a right triangle
Pythagorean theorem
a right triangle with side lengths 9, 9 square root 3, and 18 is a ______ triangle
30 60 90
to a right triangle means to determine the lengths of all three sides of the triangle and the measures of both acute angles
solve
a right triangle with side lengths 4, 4, and 4 square root 2, is a ______ triangle
45 45 90
