AP Notes, Outlines, Study Guides, Vocabulary, Practice Exams and more!

Maths Flashcards

Terms : Hide Images
2726706403trapeziumA quadrilateral (4-sided shape) with one pair of parallel sides0
2726706725quadrilaterals4 sided polygon1
2726707250parallelogramA quadrilateral with two pairs of parallel sides2
2726707966rhombusA parallelogram with four equal sides3
2726708518rectangleA parallelogram with four right angles4
2726708716square4 equal sides. 90 degree angles.5
2726710550isoscelesA triangle that has 2 equal sides.6
2726710704equilateralA triangle that has all three sides the same length.7
2726711088scaleneA triangle with no equal sides8
2726711316trianglea three-sided polygon9
2726711793right angled triangleA triangle with a right angle10
2726711970protractorA tool used to measure angles11
2726712156radiusA straight line from the center to the circumference of a circle or sphere.12
2726712317diameterA straight line passing from side to side through the center of a circle or sphere.13
2726712598circumferenceThe distance around a circle14
2726712850arcthe shape of part of a circle15
2726713642sectorThe part of a circle that looks like a piece of pie. A sector is bounded by 2 radii and an arc of the circle.16
2726714152parallelIf two or more lines, streets, etc. are parallel, the distance between them is the same all along their length17
2726714729perpendicularAt an angle of 90˚ to a given line, plane, or surface.18
2726714925verticalstanding or pointing straight up or at an angle of 90° to a horizontal surface or line19
2726716229horizontalGoing straight across from side to side20
2726716603acute angleAn angle less than 90 degrees21
2726716855right angle90 degree angle22
2726717134obtuse angleAn angle between 90 and 180 degrees23
2726717179straight angleAn angle of 180 degrees24
2726717349reflex angleBetween 180 and 360 degrees25
2726717965pentagon5 sided polygon26
2726718176hexagon6 sided polygon27
2726718282heptagonA polygon with 7 sides.28
2726718376octagon8 sided polygon29
2726719058nonagonA polygon with 9 sides30
2726719150decagon10 sided polygon31
2726719259hendecagon11 sided polygon32
2726719359dodecagon12 sided polygon33

Need Help?

We hope your visit has been a productive one. If you're having any problems, or would like to give some feedback, we'd love to hear from you.

For general help, questions, and suggestions, try our dedicated support forums.

If you need to contact the Course-Notes.Org web experience team, please use our contact form.

Need Notes?

While we strive to provide the most comprehensive notes for as many high school textbooks as possible, there are certainly going to be some that we miss. Drop us a note and let us know which textbooks you need. Be sure to include which edition of the textbook you are using! If we see enough demand, we'll do whatever we can to get those notes up on the site for you!