A question about triangles and something else?

Question

Hi, ok question one: Are isosoceles, sometimes, always or never equilateral?

Also do you know of any good websites where I can get step by step examples of when you need to find x, and y, with parrellel lines and a transversal. I wish I could put up an example of what I am talking about but, not sure how. So, thank you very much!

Answer 1

Q1: Isoceles triangles are sometimes equilateral. If they are equilateral, they must have 3 equal sides, while isoceles means 2 equal sides. However, a triangle CAN, but DOES NOT HAVE TO have 2 AND 3 equal sides, if it is equilateral. An equilateral triangle is always isoceles, but an isoceles triangle is ONLY equilateral if all three sides are equal.

Q2: I have no idea what you are talking about, but will try to help.

1\ 2
---\-------------------------------------------------------
3 \ 4
\
5 \ 6
------\-----------------------------------------------------
7\ 8

1=4=5=8 and 2=3=6=7. This is because of the following rules:

Vertical angles - angles that are across from each other, like 6 and 7, have equal measurements.

Supplementary angles - angles that are next to each other, like 5 and 7, have measurements that add up to 180 degrees because they are parts of a straight line

Corresponding angles - angles that are on the same side on both parts of the transversal (top left, top right, bottom left, and bottom right in each 2x2 "grid") have equal measurements. Ex: 1 and 5 because they are both on the top left of their grids.

Answer 2

Isosoceles triangles can sometimes be equilateral.

Isosoceles triangle has 2 equal sides.
Equilateral triangle has 3 equal sides.
         E
        &
       a / d
A ----------------------/------------ B
  b / c
/
e / h
C --------------------/------------- D
f / g
Y /
F

AB || (parallel to) CD
A transversal, or a line say EF, intersects two parallel lines AB and CD, at points X and Y respectively.

Rules
1. Sum of corresponding Angles is always equal to 180 degrees.
< d + < h = 180;
2. Alternate angles are equal.

Answer 3

An isosceles triangle is defined to be a triangle that has at least two equal sides. So it is sometimes possible for an isosceles triangle to be equilateral.

Answer 4

Well, an isosoceles triangles are triangles, where at least two of their sides equal. The key word here is at least, which means, it all three sides could actually be equal. So the answer to your question is: sometimes.

Answer 5

I sent a mail to [e-mail].

Here's what he said:

Isosceles can sometimes be equilateral because it's only requirement to be isosceles is AT LEAST 2 equal sides.

Answer 6

Isosceles triangles are sometimes equilateral. A triangle is isosceles if at least two sides are congruent. If the third is also congruent, the isosceles triangle is also equilateral.

Answer 7

I hate triangles. Math is stupid. Why does there might desire to be 3 forms of them anyhow? Screw shapes. I basically like circles, reason it extremely is the form of the solar. Who supplies a flying fcukdoodle what the circumference is. :)

Answer 8

an isosoceles triangle has two equal sides and one "oddball" side.

Answer 9

Well I know the 1st one . . . it's always