Ch. 7 Geometry Terms

49 terms by tuzz 

Ready to study?
Start with Flashcards

Create a new folder

Advertisement Upgrade to remove ads

Chord

A segment inside the circle which has end points on the sides of the circle.

Hexagon

a polygon with six sides

180

Total measure the angles in every triangle.

Rhombus

A quadrilateral, parallelogram with 4 congruent sides

Scalene

A triangle with NO sides congruent

Square

A quadrilateral, parallelogram with 4 congruent sides and 4 right angles

Supplementary

Angles whose sum is 180

Straight

An angle that measures exactly 180

Obtuse

An angle that measures between 90-180

Nonagon

A polygon with 9 sides

Line

A series of points that extends indefinitely in both directions

Right

An angle that measures exactly 90

Right Triangle

A triangle with1 right angle

Regular Polygon

A polygon with ALL sides congruent and ALL angles congruent

Ray

Part of a line that extends indefinitely in ONE direction with ONE end point

Parallel lines

Lines that NEVER intersect

Rectangle

A quadrilateral, parallelogram with 4 right angles

Equilateral

A triangle with 3 congruent sides

Triangle

A polygon with 3 sides

Skew lines

Lines that are NOT in the same plane, that are NOT parallel, and do NOT intersect

Radius

A segment that connects the center of the circle to any point on the edge of the circle

Trapezoid

A quadrilateral with exactly ONE pair of parallel sides.

Diameter

A chord that crosses through the center of the circle

Complementary

Angles whose sum is 90

Decagon

A polygon with 10 sides

Congruent Sides

Sides that are equal

Congruent Angles

Angles with equal measures

Acute

An angle that measures between 0-90

Parallelogram

A quadrilateral with 2 pairs of parallel lines

Octagon

A polygon with 8 sides

Semicircle

An arc that is exactly half of the circumference; use the diameter as a side

Acute Triangle

has 3 Acute angles

Segment

Part of a line with 2 endpoints

Vertical

Angles that are across from each other; they share a vertex only

Circle

A series of points equidistant from a given point, the center; NOT A POLYGON

Heptagon

A polygon with 7 sides

Obtuse Triangle

A triangle with 1 obtuse angle

Pentagon

A polygon with 5 sides

Vertex

The intersection of two segments or rays

Plane

A flat surface that extends indefinitely in all directions

Point

Indicates a location

Quadrilateral

Any Polygon with 4 sides

Adjacent

Angles that are next to each other; share a side and vertex

Intersecting lines

lines or segments that have one point in common; they cross over each other

Angle

Formed by the intersection of two rays or segments

Irreagular Polygon

When all sides and angles are NOT congruent

Arc

Outside portion of a circle between two points

Isosceles

A triangle with 2 congruent sides

Central Angle

An angle inside the circle that has the center of the circle as a vertex of the angle

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again

Example:

Reload the page to try again!

Reload

Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording

Create Set