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   Which theorem describes the isosceles triangle?

   • The theorem that describes the isosceles triangle is “if the two sides of a triangle are congruent, then the angle opposite to them are also congruent”. The two of the three angles of the isosceles triangle are equal in measure, which is opposite to the equal sides. Hence, one of the angles is unequal.

   Isosceles Triangle - Definition, Properties, Angles, Area, Formula

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   What is an isosceles right triangle?

   • An isosceles right triangle is a triangle with 2 congruent sides and angles in which the non-congruent angle measures 90°. Because the sum of a triangle's interior angles is equal to 180°, the remaining two angles in an isosceles right triangle measure 45° (90 + 45 + 45 = 180°). A 45-45-90 triangle is a special type of right triangle.

   Isosceles triangle - Math.net

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   What are the properties of isosceles triangles?

   • Here is a list of some properties of isosceles triangles: In an isosceles triangle, if two sides are equal, then the angles opposite to the two sides correspond to each other and are also always equal. In the given isosceles triangle ABC, the two angles ∠B and ∠C, opposite to the equal sides AB and BC, are equal to each other.

   Isosceles Triangle - Definition, Angles, Properties, Examples - SplashLearn

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   Can a isosceles triangle be acute?

   • The isosceles triangle can be acute if the two angles opposite the legs are equal and are less than 90 degrees (acute angle). A right isosceles triangle has two equal sides, wherein one of the two equal sides acts as perpendicular and another one as a base of the triangle. The third side, which is unequal, is termed the hypotenuse.

   Isosceles Triangle - Definition, Properties, Angles, Area, Formula

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   What if two sides of an isosceles triangle are equal?

   • In an isosceles triangle, if two sides are equal, then the angles opposite to the two sides correspond to each other and are also always equal. In the given isosceles triangle ABC, the two angles ∠B and ∠C, opposite to the equal sides AB and BC, are equal to each other. The sum of three angles of an isosceles triangle is always 180°.

   Isosceles Triangle - Definition, Angles, Properties, Examples - SplashLearn

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   How many equal angles are there in an isosceles triangle?

   • The two equal angles are called the isosceles angles. If the triangle is also equilateral, any of the three sides can be considered the base. Because angles opposite equal sides are themselves equal, an isosceles triangle has two equal angles (the ones opposite the two equal sides).

   Properties of Isosceles Triangles | Brilliant Math & Science Wiki

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3. en.wikipedia.org › wiki › Isosceles_triangleIsosceles triangle - Wikipedia

   en.wikipedia.org › wiki › Isosceles_triangle

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   Learn about isosceles triangles, which have two equal sides and an axis of symmetry. Find formulas, examples, applications, history and more on this comprehensive article.

4. byjus.com › maths › isosceles-triangleIsosceles Triangle - Definition, Properties, Angles, Area ...

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   Learn what an isosceles triangle is, how to identify its angles and sides, and how to calculate its area and perimeter. Explore the types and properties of isosceles triangles with examples and practice questions.

   • Video Duration: 6 min

   • Views: 29.4K

   • An isosceles triangle is a triangle with two equal sides. Also, the angles opposite to the two equal sides are also congruent.
   • Depends on the angles between the two legs of a triangle, the isosceles triangle is classified as: Isosceles acute triangle Isosceles right trian...
   • The area of the isosceles triangle is defined as half the product of base and height of a triangle. The formula to calculate the area of an isoscel...
   • Since the isosceles triangle has two equal sides, the formula to calculate the perimeter is 2a+b units, where “a” is the length of two equal legs a...
   • The angles opposite to the two equal sides of a triangle are also equal. The two equal sides of an isosceles triangle are called the legs and the...

5. Videos

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     What is an Isosceles Triangle? | Types of Triangles | Math with Mr. J

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     ISOSCELES TRIANGLE THEOREMS EXPLAINED!

     7 Oct 2015

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     The Isosceles Triangle Theorem - Proof and Easy Explanation.

     28 Nov 2022

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6. www.bbc.co.uk › bitesize › articlesWhat are the different types of triangle? - BBC Bitesize

   www.bbc.co.uk › bitesize › articles

   Discover the different types of triangles and find out the difference between an equilateral, scalene, isosceles and right-angled triangle in this KS2 guide.

7. www.splashlearn.com › geometry › isosceles-triangleIsosceles Triangle - Definition, Angles, Properties, Examples

   www.splashlearn.com › geometry › isosceles-triangle

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   Learn what an isosceles triangle is, how to identify its parts and types, and how to calculate its area and perimeter. See examples, formulas, and practice problems on isosceles triangles.

   • A triangle is said to be an isosceles triangle if any of its two sides are equal. Let's take a triangle that has AB, BC, and CA as its three sides....
   • Yes, a right triangle or right-angle triangle can be an isosceles triangle. An isosceles right triangle will have 1 right angle and 2 other angles...
   • Yes, if we know the two equal angles, then we can easily subtract the sum of it from 180°, since the sum of all angles of a triangle is equal to 180°.
   • It has two sides of equal length. The angles opposite to the equal sides are also equal in measure.

8. www.omnicalculator.com › math › isosceles-triangleIsosceles Triangle Calculator

   www.omnicalculator.com › math › isosceles-triangle

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   Jul 30, 2024 · Find the area, perimeter, angles, and other properties of an isosceles triangle with this online tool. Learn about the formulas, theorems, and examples of isosceles triangles, including the golden triangle.

9. www.math.net › isosceles-triangleIsosceles triangle - Math.net

   www.math.net › isosceles-triangle

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   Learn what an isosceles triangle is, how to identify its parts, and how to calculate its area, perimeter, and altitudes. Explore different types of isosceles triangles, such as acute, obtuse, right, 45-45-90, and golden triangles.

10. brilliant.org › wiki › properties-of-isosceles-trianglesProperties of Isosceles Triangles | Brilliant Math & Science Wiki

    brilliant.org › wiki › properties-of-isosceles-triangles

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    Learn the definition, basic and advanced properties, and problems of isosceles triangles. Find out how to determine unknown angles, area, and altitude of isosceles triangles using formulas and diagrams.