Ізосцелес Triangle Properties

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What is an isosceles triangle?
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An isosceles triangle is a triangle that has at least two sides of equal length.
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What are the equal sides of an isosceles triangle called?
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The equal sides of an isosceles triangle are called the legs.
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What is the angle called that is between the two legs of an isosceles triangle?
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The angle between the two legs of an isosceles triangle is called the vertex angle.
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What is the common property of the base angles in an isosceles triangle?
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The base angles in an isosceles triangle are equal.
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How can you calculate the perimeter of an isosceles triangle?
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To find the perimeter, sum up the lengths of the three sides.
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What is the property of the altitude drawn from the vertex to the base in an isosceles triangle?
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The altitude from the vertex to the base is also the median and the angle bisector.
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What theorem is applicable to the angles of an isosceles triangle?
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The Base Angles Theorem states that the base angles of an isosceles triangle are congruent.
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How do you find the area of an isosceles triangle?
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The area can be calculated using the formula: area = 1/2 * base * height.
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Given two equal sides and the base angles of 45 degrees, what type of triangle is it?
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It's an isosceles right triangle.
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If an isosceles triangle has sides of 5 cm, 5 cm, and 8 cm, how do you know it's isosceles?
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It has two sides of equal length, 5 cm each, confirming it as isosceles.
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What is the relationship between the legs and the base in an isosceles triangle regarding their lengths?
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The legs are equal in length, while the base can be of different length.
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What formula can you use if given two equal sides and need to find the third, using the angles?
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Use the Law of Cosines to find the third side.
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Can an isosceles triangle be equilateral?
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Yes, if all three sides are equal, it is an equilateral triangle as well.
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How does the sum of internal angles in an isosceles triangle compare to any other triangle?
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The sum of the internal angles in an isosceles triangle is always 180 degrees, just like any other triangle.
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What happens to the altitude if an isosceles triangle is obtuse?
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The altitude can fall outside the triangle when extended.
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