why is the isosceles triangle and the equilateral both classified as each other

because an equilateral triangle is all equill sides and an isosceles triangle is two or more equill sides

Is their any more triangle practices?

No. You will have to do them over if you want extra practice.

um whenever i double tap a question it ameatiatily says its wrong

dont double tap just tap and check

I don’t understand why an equilateral triangle is constantly being defined as and Isosceles triangle.

An equilateral triangle has 3 equal length sides. An isosceles triangle has at least 2 sides of the same length. Thus all equilateral triangles are also isosceles.

this was so easy ;-; >:(

ITS NOT IF YOUR ON AN IPAD! Sorry but you must drag the lines together and it’s really frustrating.

Main content

4th grade

Course: 4th grade > Unit 11

Lesson 4: Classifying triangles

Types of triangles review

CCSS.Math:

4.G.A.2

Google Classroom

Review ways to classify triangles based on their sides lengths and angles. Practice classifying triangles.

Classifying triangles by their angles

Acute triangles

An start color #11accd, start text, a, c, u, t, e, end text, end color #11accd triangle has start color #11accd, start text, 3, space, a, n, g, l, e, s, space, t, h, a, t, end text, end color #11accd start color #11accd, start text, e, a, c, h, space, m, e, a, s, u, r, e, space, l, e, s, s, space, t, h, a, n, space, end text, 90, degrees, end color #11accd. Below are examples of start color #11accd, start text, a, c, u, t, e, space, t, r, i, a, n, g, l, e, s, end text, end color #11accd.

Right triangles

A start color #7854ab, start text, r, i, g, h, t, end text, end color #7854ab triangle has start color #7854ab, start text, 1, space, a, n, g, l, e, space, t, h, a, t, space, m, e, a, s, u, r, e, s, space, end text, 90, degrees, end color #7854ab and 2 acute angles. Below are examples of start color #7854ab, start text, r, i, g, h, t, space, t, r, i, a, n, g, l, e, s, end text, end color #7854ab.

Obtuse triangles

An start color #1fab54, start text, o, b, t, u, s, e, end text, end color #1fab54 triangle has start color #1fab54, start text, o, n, e, space, a, n, g, l, e, space, t, h, a, t, space, m, e, a, s, u, r, e, s, end text, end color #1fab54 start color #1fab54, start text, m, o, r, e, space, t, h, a, n, space, end text, 90, degrees, end color #1fab54 and 2 acute angles. Below are examples of start color #1fab54, start text, o, b, t, u, s, e, space, t, r, i, a, n, g, l, e, s, end text, end color #1fab54.

Want to learn more about classifying triangles? Check out this video.

Problem 1A

Current

Classify triangle, P, Q, R by its angles.

Want to try more problems like this? Check out this exercise

Classifying triangles by their side lengths

Equilateral triangles

An start color #11accd, start text, e, q, u, i, l, a, t, e, r, a, l, end text, end color #11accd triangle has start color #11accd, start text, t, h, r, e, e, space, e, q, u, a, l, space, s, i, d, e, s, end text, end color #11accd. Below are examples of start color #11accd, start text, e, q, u, i, l, a, t, e, r, a, l, end text, end color #11accd triangles.

Isosceles triangles

An start color #7854ab, start text, i, s, o, s, c, e, l, e, s, end text, end color #7854ab triangle has start color #7854ab, start underline, start text, a, t, space, l, e, a, s, t, end text, end underline, end color #7854ab start color #7854ab, start text, t, w, o, space, e, q, u, a, l, space, s, i, d, e, s, end text, end color #7854ab. Below are examples of start color #7854ab, start text, i, s, o, s, c, e, l, e, s, end text, end color #7854ab triangles.

Scalene triangles

A start color #1fab54, start text, s, c, a, l, e, n, e, end text, end color #1fab54 triangle has start color #1fab54, start text, n, o, space, e, q, u, a, l, space, s, i, d, e, s, end text, end color #1fab54. Below are examples of start color #1fab54, start text, s, c, a, l, e, n, e, end text, end color #1fab54 triangles.

Problem 2A

Current

Classify triangle, P, Q, R by its sides.

Want to try more problems like this? Check out this exercise.

Want to join the conversation?

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TJ
Posted 5 years ago. Direct link to TJ's post “Why can't I go back to se...”
Why can't I go back to selecting? I got a wrong and I can't go back
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- 28fcoraggio
  Posted 7 months ago. Direct link to 28fcoraggio's post “It just won't let you.”
  It just won't let you.
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kezia bukuru
Posted 4 years ago. Direct link to kezia bukuru's post “why is the isosceles tria...”
why is the isosceles triangle and the equilateral both classified as each other
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(43 votes)
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- Ryan Gati
  Posted 3 years ago. Direct link to Ryan Gati's post “because an equilateral tr...”
  because an equilateral triangle is all equill sides and an isosceles triangle is two or more equill sides
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Kumo yamashita
Posted 6 years ago. Direct link to Kumo yamashita's post “Is their any more triangl...”
Is their any more triangle practices?
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(21 votes)
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- naokantey
  Posted 6 years ago. Direct link to naokantey's post “No. You will have to do t...”
  No. You will have to do them over if you want extra practice.
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  (10 votes)
Noah Remetan
Posted 3 years ago. Direct link to Noah Remetan's post “Why are triangles used in...”
Why are triangles used in math?
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(14 votes)
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- ethan.smidt
  Posted 4 months ago. Direct link to ethan.smidt's post “it is because it uses geo...”
  it is because it uses geometry
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  (5 votes)
Nyaruyoma
Posted 4 years ago. Direct link to Nyaruyoma's post “I don’t understand why an...”
I don’t understand why an equilateral triangle is constantly being defined as and Isosceles triangle.
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(8 votes)
Answer
- Nights Dawn
  Posted 4 years ago. Direct link to Nights Dawn's post “An equilateral triangle h...”
  An equilateral triangle has 3 equal length sides. An isosceles triangle has at least 2 sides of the same length. Thus all equilateral triangles are also isosceles.
  Comment on Nights Dawn's post “An equilateral triangle h...”
  (23 votes)
julia beltran
Posted 5 years ago. Direct link to julia beltran's post “if all of the angels are ...”
if all of the angels are acute but lenghths are different what is that?
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- 😇Diego😈
  Posted 6 months ago. Direct link to 😇Diego😈's post “its scalene”
  its scalene
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Emma
Posted 2 years ago. Direct link to Emma's post “um whenever i double tap ...”
um whenever i double tap a question it ameatiatily says its wrong
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- 😇Diego😈
  Posted 6 months ago. Direct link to 😇Diego😈's post “dont double tap just tap ...”
  dont double tap just tap and check
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  (7 votes)
middleton.daveyon
Posted 3 years ago. Direct link to middleton.daveyon's post “i got my one right but it...”
i got my one right but it said i got it worng
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(10 votes)
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annalies.1913965
Posted 3 years ago. Direct link to annalies.1913965's post “it said that a acute was ...”
it said that a acute was like all the sides lower then 90* but the last one was over 90*
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(7 votes)
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- 😇Diego😈
  Posted 6 months ago. Direct link to 😇Diego😈's post “then it was obtuse”
  then it was obtuse
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Alyssa
Posted 4 years ago. Direct link to Alyssa's post “this was so easy ;-; >:(”
this was so easy ;-; >:(
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(3 votes)
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- Avinash
  Posted 3 years ago. Direct link to Avinash's post “ITS NOT IF YOUR ON AN IPA...”
  ITS NOT IF YOUR ON AN IPAD! Sorry but you must drag the lines together and it’s really frustrating.
  Comment on Avinash's post “ITS NOT IF YOUR ON AN IPA...”
  (13 votes)