A trapezoid is isoscles if its non-parallel sides are congruent. Accurately draw an isosceles trapezoid. Measure the base angles. What do you notice?
notice that (a) base angles are equal, (b) other two angles are also equal, (c) opposite angles are supplementary.
whats that rule? a rectangle can be parallelogram but a parallogram cant be rectangle…or something I FORGET!
ANd what is equiangular and regular?
as u can see, im working with polygons and shapes here.
concave and convex?
A rectangle is a parallelogram (has 2 sets of parallel sides), but a parallelogram might not be a rectangle (it’s only a rectangle if it has 4 right angles).
Equiangular means that all the angles in the polygon are equal.
Regular means that all the angles are equal AND all the sides of the polygon are the same length.
Convex means that there are no parts of the polygon "dented in" - like a square.
Concave means that some part of the shape is "dented in" - I don’t know a better way to put it.
Hope this answers your questions =)
Hey guys. I am choosing my thesis subject, and i’m looking for something with no relation with geometry. I don’t like geometry.
Try modern algebra…there is not much in it…like Lie Groups or Group Theory…..my question is How can you write a topic on mathematics without geometry? I suggest that you bone up on that subject before you write your thesis….just a friendly suggestion.
Geometry Test tomorrow?
I have a geometry test tomorrow and I always have problems studying for tests ad especially math. Does anybody have any suggestions? I want to get a 100. I have to prove to my dad that I can get a 100 in math
Just simple stuff. Angle bisectors, circles, polygons, clock problems. That’s what i really don’t get. The clock problems!
yeah like if it is 2:30 what angle are the clock hands at. The hour hand would be half way to the three. I don’t get how to figure those out.
Elle is right - it depends on whether you’re doing formal or informal geometry. I can give you some general hints, though.
First off, one thing beginning students often neglect is vocabulary. It seems so trivial, but in mathematics things are defined very precisely. If you know and understand the definitions, many problems become incredibly easy. For instance, if I ask you if two lines that never meet are necessarily parallel, knowing that parallel means two lines IN A PLANE will tell you (correctly) that the answer is "no" and give you a quick counterexample.
If you’re studying postulates and theorems, be sure you know them - especially the most recent ones.
Go back over your returned homework. Make sure you understand how each of the problems there is worked and especially why it works that way. Ask a lot of "why" questions. The better you know why something works the way it does, the less likely it will turn around and bite you.
If you have any specific questions, feel free to post them here.
Edit: Can you be more specific about "clock problems"? Do you mean things like "what angle does the minute hand traverse between 1:00 AM and 1:20 AM"?
I am doing a project for geometry and we have to find shapes in the real world. My theme is music and I need to find a plane, but it has to suggest a sense of infinity because planes are infinite. Any suggestions?
My first attempt just disappeared, so …
I like your idea and would suggest you may find something useful amongst these. They’re all by Miles Davis:
Gone, Gone, Gone, or Buzzard Song from Porgy and Bess; extracts here:
http://music.barnesandnoble.com/Porgy-and-Bess/Miles-Davis/e/074646514122/?itm=15
or All Blues (11 minutes so it seems infinite [!]) with its steady rhythm and chord progression:
http://www.amazon.com/gp/product/B00136LHXY/ref=dm_mu_dp_trk4?ie=UTF8&qid=1252501902&sr=1-1
or, if you haven’t already done so, you can join spotify.com and hear the whole tracks.
For the second time, I hope you enjoy the music even if it doesn’t fulfil your wish.
Access full lesson containing this video at: http://www.yourteacher.com/geometry/similartriangle.php Students learn that similar polygons have the same shape, and if two polygons are similar, then the corresponding angles are congruent, and the corresponding sides are in proportion. Students also learn that the scale factor is ratio of the lengths of two corresponding sides. Students are then asked to use these concepts to find missing angle measures and missing side lengths in similar figures.
Duration : 0:3:0
So far I have only taken Calculus courses, so wondering how might students find Euclidean Geometry course when comparing both…
For the first answer to this question, are you sure it’s gonna be like high school’s when I take the course at university level??
Euclidean geometry is just the regular geometry you take in high school. If you’ve had calculus, you should have taken geometry long ago.
Edit:
It might be accelerated, so you’ll move at a faster pace than in high school, but I imagine it will be pretty much the same. You could compare it to college algebra. College algebra is just an accelerated combination of Algebra 1 and 2 from high school.
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What model of Texas Instruments calculator should I get to use in Geometry? I think my teacher said we need a calculator that can solve "trinomials" or a word like that.
Hi:
the TI 83 or TI 84 is fine for that. It’s the standard issue calculators that most college and high school recommend you to have. The TI N-Spire Calculator is the newest calculator you can get It can do anything mathematical however it is pricey
I hope this helps
71-75, area, chords, tangents of circles