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geometry
Question | Answer |
---|---|
angles that have the same vertex and a common side but no interior points in common | adjacent angle |
two non-adjacent angles on opposite sides of two lines | alternate interior angles |
two angles whose measures total 90 degrees | complementary angles |
two angles whose measures total 180 degrees | supplementary angles |
non-adjacent angles formed by intersecting lines | vertical angles |
a flat surface that goes on forever in all directions | plane |
a figure that cannot be traced with the same starting and stopping points | open figure |
a figure in a plane that can be traced with the same starting and stopping points | closed figure |
a closed figure made of line segments that do not cross | polygon |
a point that is common to two sides of a polygon or an angle | vertex |
a line segment that connects one vertex to another vertex | diagonal |
an exact location in space | point |
a set of points that form a straight path extendending in opposite directions without end | line |
a part of a line that has one endpoint and continues without end in the other direction | ray |
a part of a ray or line that has two end points | line segment |
line segments that have the same length | congruent lines |
a five sided shape | pentagon |
a three sided shape | triangle |
a six sided shape | hexagon |
a four sided shape | quadrilateral |
a ten sided shape | decagon |
lines tht meet or cross each other | intersecting |
lines that never intersect | parallel lines |
lines that intersect to form a 90 degree angle | perpendicular lines |
a trangle that has no congruent sides | scalene |
a triangle with at least 2 congruent sides | isosceles |
a triangle with 3 congruent sides | equilateral |
a triangle with three acute angles | acute triangle |
a triangle with 1 right angle | right triangle |
a triangle with 1 obtuse angle | obtuse triangle |
a quadliteral with both pairs of opposite sides parallel and congruent | parallelogram |
a parallelogram with 4 congruent sides | rhombus |
a parallelogram with 4 right angles | a rectangle/square |
a quadliteral with 4 congruent sides | square |
a quadliteral that has exactly 1 pair of parallel sides | trapezoid |
a quadliteral that has 2 pairs of congruent adjacent sides | kite |
a closed figure having all points the same distance from the center | circle |
a ine segment that has endpoints on a circle | chord |
a chord that passes through the center of a circle | diameter |
a line segment that connects the center of a circle and a point on the circle. Its length is half the diameter | radius |
two points on a circle and the part of the circle between the two points | arc |
an angle whose vertex is the center of a circle | central angle |
a region enclosed by the two radii and an arc joining the endpoints of the radii | sector |
formula for adding all sides (2L+2W) | perimeter |
formula to multipy length times width (LxW) | area |
formula (LxWxH) | volume |
formula (1/2BH) | area of a triangle |
formula PiD (pi is 3/14) | circumference |
have the same shape, but not the same size | similar |
moves a figure in a straight line without turning or flipping it | translation |
turns a figure about a point | rotation |
creates a mirror image of a figure across a line | reflection |
a picture | image |