Question | Answer |
a closed plane figure made up of line segments | polygon |
a 3 sided polygon | triangle |
a 5 sided polygon | pentagon |
a 6 sided polygon | hexagon |
a 4 sided polygon | quadrilateral |
a a polygon that has equal sides and angles | a regular polygon |
an angle that measures between 0* and 90* | acute angle |
an angle that measures exactly 90* | right angle |
an angle that measures between 90* and 180* | obtuse angle |
an angle that measures exactly 180* | a straight angle |
the central point on a circle which is the same distance from the center | circle name or center |
a line from the center point of a circle to any point on the circle. It is 1/2 of the diameter. | radius |
a line that has end points on a circle | chord |
a line segment that passes through the center of a circle cutting the circle in 1/2. | diameter |
an angle whose vertex is the center of a circle | central angle |
a quadrilateral with both pairs of opposite sides parallel and equal in length | parallelogram |
a parallelogram with 4 right angles | rectangle |
a parallelogram with all sides the same length | rhombus |
a rectangle with all sides the same length | square |
a quadrilateral with only one pair of parallel sides | trapezoid |
a triangle with all angles less than 90* | acute triangle |
a triangle with one right angle | right triangle |
a triangle with one obtuse angle | obtuse triangle |
a triangle with all side of equal length | equilateral triangle |
a triangle with 2 sides the same length | isosceles triangle |
a triangle with no sides the same length | scalene triangle |
The sum of the measures of the angles of a quadrilateral is... | 360* |
the sum of the measures of the angles of a triangle is .... | 180* |
an exact location in space | point |
a straight path of points that goes on forever in 2 directions | line |
part of a line. It has 2 endpoints | line segment |
a part of a line. It has one endpoint and extxnds forever in only one direction. | ray |
an endless flat surface. | plane |
2 lines that never cross and stay the same distance apart | parallel lines |
2 lines that pass through the same point | intersecting lines |
2 rays with the same endpoint | angle |
the common endpoint of an angle | vertex |
A tool used to measure angles | protractor |
an angle that measures between 0* and 90* | acute angle |
an angle that measures exactly 90* | right angle |
an angle that measures between 90* and 180* | obtuse |
the point where 2 rays meet | vertex |