Triangle similarity review (article) | Khan Academy (2024)

Review the triangle similarity criteria and use them to determine similar triangles.

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  • grace.mews

    5 years agoPosted 5 years ago. Direct link to grace.mews's post “i dont get most of this s...”

    i dont get most of this stuff

    (28 votes)

    • KhanAcademy101

      5 years agoPosted 5 years ago. Direct link to KhanAcademy101's post “Try to practice upon it a...”

      Triangle similarity review (article) | Khan Academy (4)

      Try to practice upon it and you might get it, or just use khan academy's practice a lot. Hope it helps

      (23 votes)

  • meowcatmeow

    7 years agoPosted 7 years ago. Direct link to meowcatmeow's post “How can you tell the diff...”

    How can you tell the difference between SAS and SSA? (Assume you had a problem and had to chose if it was sim. because of SAS or SSA, how would you figure it out?)

    (12 votes)

  • Martinez, Rayleen; 200807072

    4 years agoPosted 4 years ago. Direct link to Martinez, Rayleen; 200807072's post “The videos im watching is...”

    The videos im watching is not adding up to the working you guys are giving me. Im so lost.

    (14 votes)

  • beauregard42

    2 years agoPosted 2 years ago. Direct link to beauregard42's post “Yo, man. This is how we d...”

    Yo, man. This is how we do da thing. Firstly, if the triangles have 2+ matching corresponding angles, then it is similar. If it has side lengths that can be divided by a number, say X, and then match the side lengths of your other triangle, then it is similar. If it has 2 matching corresponding(see last sentence) sides, and the angle between these is the same, then it is similar. -Beauregard42. If this helps you, your welcome.

    (8 votes)

  • JAKE617

    4 years agoPosted 4 years ago. Direct link to JAKE617's post “Define Equation”

    Define Equation

    (2 votes)

    • Evan

      4 years agoPosted 4 years ago. Direct link to Evan's post “An equation is a statemen...”

      Triangle similarity review (article) | Khan Academy (16)

      An equation is a statement with an equals sign.

      So 3 + 5 = 8 and 5x + 12 = (x / 4) + 3 are both equations,
      but 24 * 9 and 3y ≥ x - 8 are not equations.

      (13 votes)

  • Tim O

    a year agoPosted a year ago. Direct link to Tim O's post “What other triangle simil...”

    What other triangle similarity criteria can be used?

    (3 votes)

    • annasusan.pra

      a year agoPosted a year ago. Direct link to annasusan.pra's post “I believe AA, SAS, and SS...”

      I believe AA, SAS, and SSS are the only triangle similarity theorems

      (6 votes)

  • Michelle Banks

    8 months agoPosted 8 months ago. Direct link to Michelle Banks 's post “I thought I thought I wou...”

    I thought I thought I would need a calculator for quiz 1,
    But I got a 100% Without even trying.
    *And I never did this before!*

    (5 votes)

    • Lynn

      5 months agoPosted 5 months ago. Direct link to Lynn's post “Good job!”

      Good job!

      (2 votes)

  • zachary.foret

    2 years agoPosted 2 years ago. Direct link to zachary.foret's post “These lessons do not expl...”

    These lessons do not explain SSS similar triangles very well. What lesson would help me understand the basics?

    (2 votes)

    • connormoorhouse51

      a year agoPosted a year ago. Direct link to connormoorhouse51's post “I suppose trying the Tria...”

      I suppose trying the Triangle Similarity postulates/criteria lesson, or going back and reading the articles and doing all of the practice problems may help you. Ultimately, in summary, the SSS similarity is used when every side can be multiplied by a constant to get the new side, for example, if AB/XY was 4, AC/AZ was 4, and BC/YZ was 4, it would be a SSS similarity because each value can be multiplied either by 4 or 1/4 (depending on which number is larger) which is defined as the constant. I hope this helps!

      (4 votes)

  • djackson0094

    3 years agoPosted 3 years ago. Direct link to djackson0094's post “i don't get it sometimes”

    i don't get it sometimes

    (3 votes)

    • lily.m.2203

      3 years agoPosted 3 years ago. Direct link to lily.m.2203's post “Is there anything I can d...”

      Is there anything I can do to help you?

      (2 votes)

  • AHHHHH, MONSTERS!

    2 years agoPosted 2 years ago. Direct link to AHHHHH, MONSTERS!'s post “gelp im in 8 doing this w...”

    gelp im in 8 doing this while other people are doing calculus rn :sob:

    (3 votes)

Triangle similarity review (article) | Khan Academy (2024)

FAQs

How do you prove triangle similarity answers? ›

If two angles of one triangle are congruent to two angles of another triangle, then the two triangles are similar. If ∠A ≅ ∠D and ∠B ≅ ∠E, then △ABC ∼ △DEF.

Is 2 sides enough to show triangle similarity? ›

It is not necessary to check all angles and sides in order to tell if two triangles are similar. In fact, if you know only that two pairs of sides are proportional and their included angles are congruent, that is enough information to know that the triangles are similar. This is called the SAS Similarity Theorem.

How do you establish triangle similarity? ›

Two triangles are similar if they meet one of the following criteria. : Two pairs of corresponding angles are equal. : Three pairs of corresponding sides are proportional. : Two pairs of corresponding sides are proportional and the corresponding angles between them are equal.

What does similar mean in Geometry Khan Academy? ›

Two shapes are similar if we can change one shape into the other using rigid transformations (like moving or rotating) and dilations (making it bigger or smaller).

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