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4-1 Classifying Triangles Answer Key Of Life

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Wed, 03 Jul 2024 02:49:33 +0000

But the important point here is that we have an angle that is a larger, that is greater, than 90 degrees. But both of these equilateral triangles meet the constraint that at least two of the sides are equal. Maybe you could classify that as a perfect triangle!

Classifying Triangles Worksheet With Answers

Answer: Yes, the requirement for an isosceles triangle is to only have TWO sides that are equal. What type of isosceles triangle can be an equilateral. The first way is based on whether or not the triangle has equal sides, or at least a few equal sides. Have a blessed, wonderful day!

And the normal way that this is specified, people wouldn't just do the traditional angle measure and write 90 degrees here. Now, you might be asking yourself, hey Sal, can a triangle be multiple of these things. If this angle is 60 degrees, maybe this one right over here is 59 degrees. I want to make it a little bit more obvious.

Classifying Triangles Answer Key

Now you might say, well Sal, didn't you just say that an isosceles triangle is a triangle has at least two sides being equal. That is an isosceles triangle. A triangle cannot contain a reflex angle because the sum of all angles in a triangle is equal to 180 degrees. An isosceles triangle can not be an equilateral because equilateral have all sides the same, but isosceles only has two the same. And then let's see, let me make sure that this would make sense. Maybe this is the wrong video to post this question on, but I'm really curious and I couldn't find any other videos on here that might match this question. An acute triangle is a triangle where all of the angles are less than 90 degrees. An obtuse triangle cannot be a right triangle. My weight are always different! Created by Sal Khan. Maybe this has length 3, this has length 3, and this has length 2. Classifying triangles worksheet answer key. But not all isosceles triangles are equilateral. A right triangle is a triangle that has one angle that is exactly 90 degrees.

Absolutely, you could have a right scalene triangle. An equilateral triangle has 3 equal sides and all equal angle with angle 60 degrees. That's a little bit less. Equilateral: I'm always equal, I'm always fair! And a scalene triangle is a triangle where none of the sides are equal. Wouldn't an equilateral triangle be a special case of an isosceles triangle? Classifying triangles worksheet with answers. So let's say a triangle like this. E. g, there is a triangle, two sides are 3cm, and one is 2cm. So it meets the constraint of at least two of the three sides are have the same length. I've heard of it, and @ultrabaymax mentioned it. All three of a triangle's angles always equal to 180 degrees, so, because 180-90=90, the remaining two angles of a right triangle must add up to 90, and therefore neither of those individual angles can be over 90 degrees, which is required for an obtuse triangle. The only requirement for an isosceles triangle is for at minimum 2 sides to be the same length. Notice they all add up to 180 degrees. An equilateral triangle would have all equal sides.

Classifying Triangles Worksheet Answer Key

So for example, this right over here would be a right triangle. An acute triangle can't be a right triangle, as acute triangles require all angles to be under 90 degrees. So the first categorization right here, and all of these are based on whether or not the triangle has equal sides, is scalene. It's no an eqaulateral. Can a acute be a right to.

None of the sides have an equal length. But on the other hand, we have an isosceles triangle, and the requirements for that is to have ONLY two sides of equal length. Classifying triangles answer key. In this situation right over here, actually a 3, 4, 5 triangle, a triangle that has lengths of 3, 4, and 5 actually is a right triangle. Or maybe that is 35 degrees. A reflex angle is an angle measuring greater than 180 degrees but less than 360 degrees. An equilateral triangle has all three sides equal, so it meets the constraints for an isosceles.

Would it be a right angle? So let's say that you have a triangle that looks like this. An isosceles triangle can have more than 2 sides of the same length, but not less. Are all triangles 180 degrees, if they are acute or obtuse? So for example, a triangle like this-- maybe this is 60, let me draw a little bit bigger so I can draw the angle measures. All three sides are not the same. Notice, they still add up to 180, or at least they should.

And let's say that this has side 2, 2, and 2. Now down here, we're going to classify based on angles. Or if I have a triangle like this where it's 3, 3, and 3. I've asked a question similar to that.