Question

The vertices of a triangle are located at (8,6), (8,3), and
(4,3). Which of the following classifies this triangle?
The triangle is a right scalene triangle.
The triangle is an acute scalene triangle.
The triangle is a right isosceles triangle.
The triangle is an acute isosceles triangle.

Answer 1

I will post my plots on the coordinate all i need help with is figuring out the shape

Answer 2

d

Answer 3

or a idk

Answer 4

well it looks like a right triangle

Answer 5

Nicely plotted. This helps figure it out really quickly.
First, i have no idea what a scalene triangle is :D But i do know what a the other two are. And you're right it looks like a right triangle.

Answer 6

https://www.google.com/search?q=acute+isosceles+triangle&rlz=1C1ASUC_enUS619US619&oq=acute+isosceles+triangle&aqs=chrome..69i57&sourceid=chrome&es_sm=122&ie=UTF-8

VS

https://www.google.com/search?q=right+isosceles+triangle.&rlz=1C1ASUC_enUS619US619&oq=right+isosceles+triangle.&aqs=chrome..69i57&sourceid=chrome&es_sm=122&ie=UTF-8

Answer 7

Thank you :D

Answer 8

sorry the links are so long. Which one fits it best?

Answer 9

isosceles triangle.?

Answer 10

Right isosceles triangle.
:D

Answer 11

Yay! thank you

Answer 12

we know this because of the two points that lie on the same line. It makes a 90 deg angle.

Answer 13

it was wrong :(

Answer 14

WHAT? really?

Answer 15

It was a right scalene triangle DX

Answer 16

Hrmmm. https://www.google.com/search?q=right+scalene+triangle&rlz=1C1ASUC_enUS619US619&oq=right+scalene+triangle&aqs=chrome..69i57&sourceid=chrome&es_sm=122&ie=UTF-8

Answer 17

i hate coordinate geometry its confusing

Answer 18

That looks sorta like my plots

Answer 19

Well thats news to me. TBH i've never heard of that type of triangle before. I've been through college algebra, trig, calculus 1-3, foundatiosn of calculus... other high level maths. Not once has it ever been mentioned.

Answer 20

OHHHHHHHHHHHHH i see the difference.

Answer 21

okay an isoceles triangle has 45 degree angles at both "tips" does that make sense?

Answer 22

this triangle has different degrees at the tips. so maybe thats what qualifies it to be scalene

Answer 23

This is 9th grade math and no it doesnt how can i tell if it has 45 degrees at the tips?

Answer 24

have you guys talked about cosine and sine functions yet?

Answer 25

no we havent schools over but i am doing extra credit so i doubt we will learn that

Answer 26

is their like another way you can tell the difference then the 45 degree tips?

Answer 27

Okay, i have a website that you can look at. https://www.mathsisfun.com/algebra/trig-finding-angle-right-triangle.html

Answer 28

great i always use math is fun!

Answer 29

Knowing this will put you way ahead of the curve!! :D

Answer 30

Awesome!!!

Answer 31

great i think i get it alittle !!!

Answer 32

also im pretty sure a 90 45 45 degree, aka a right isosceles triangle has the height = width. http://mathworld.wolfram.com/IsoscelesRightTriangle.html
So in the case of that digram, CA = CB in length.

Answer 33

oh gosh this is so much to remmeber

Answer 34

I know. It can be overwhelming at first. But once you do a few problems, it'll get easier. Trust me! :D

Answer 35

Just wait until you get to calculus, it's so cool!!!

Answer 36

Thanks so much i'll keep doing problems and if i am stuck can i @ you for help?

Answer 37

Yup, you sure can.

Answer 38

ty!!!

Answer 39

Looking at the coordinates should of been your clue, it is a plain 3 4 5 right triangle, one leg is 3, the other 4 and the hypotenuse is 5 (found by using the distance formulae)

Answer 40

true i didnt really think about using the distance formula for that but now i know thanks @ radar

Answer 41

@radar

Answer 42

You're welcome.

Answer 43

You only needed to use the distance formulae for the long side. The legs you could see by inspection as one at both points on x=8, the other both points on y = 3.

Answer 44

Your drawing was a good one, and if the coordinates had of been printed at the three points, it would of been more obvious.

Answer 45

that makes so much more sense now that you explained it

Answer 46

Good day to you.

Answer 47

good day to you too