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Identifying scale copies

Sal looks at side measures on figures to determine if they are scale copies.

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• how can we actually calculate the scale copy of one figure to the other figure?
Thanks to people who help to answer this question.
• Eunice, first you have to look at one of the sides of the scaled copy. If they are divisible by the numbers in the original shape, then try and see if the others sides of the scaled copy are scaled by the same factor. If they are, then they are a scaled copy. Hope this helped!
• on your practice can you make the lines for the squares more visable, it is kind of hard to see.
• I don’t think he can do that. He would have to change the code for the exercises which he cannot do
• this to easy
• Maybe for you its easy.
• Guys im in 3rd grade lol
• Get better :)
• How would we do this with 3D shapes instead of 2D?
• what is a scale copy? Help me plz.
• A scale copy of a figure is a figure that is geometrically similar to the original figure.

This means that the scale copy and the original figure have the same shape but possibly different sizes.

More precisely, the angles of the scale copy are equal to the corresponding angles of the original figure, and the ratio of the side lengths of the scale copy is the same as the ratio of the corresponding side lengths of the original figure.

In real life, a scale copy is often smaller than the original figure. For example, the drawing of a floor plan for a room is a scale copy of the actual floor of the room. The floor plan drawing has the same shape as but is smaller than the actual floor. For example, if the actual floor is a rectangle measuring 12 feet by 16 feet, a scale copy could be a drawing of a 6-inch by 8-inch rectangle (because 12ft:16ft is the same ratio as 6in:8in).
• those rocks on the quizes be giving me the light skin stare.
• why dont you count the top thats the key to finding the answer.
• At , how would the Pythagorean theorem work. It's a right trapezoid. A=1/2(b1+b2)h.
• The Pythagorean Theorem holds a fundamental role in right triangle geometry, establishing a relationship between the squares of a right triangle's sides. While a right trapezoid, by definition, is not a triangle, the theorem can be strategically applied under specific conditions.

The provided formula, A = 1/2(b1 + b2)h, serves as a dedicated formula for calculating the area (A) of right trapezoids. It efficiently leverages the lengths of the two bases (b1 and b2) and the height (h) of the trapezoid.

However, the power of the Pythagorean Theorem comes into play when we consider a right triangle existing within the trapezoid itself. Constructing a vertical line from a right angle down to the longer base effectively creates an internal right triangle. If the lengths of the two legs of this internal right triangle are known, the Pythagorean Theorem (a^2 + b^2 = c^2) can be utilized to determine the length of the hypotenuse, which conveniently corresponds to the slant height of the original right trapezoid.

In conclusion, while the Pythagorean Theorem cannot be directly applied to the entire right trapezoid, it becomes a valuable tool when strategically employed within a right triangle cleverly formed within the trapezoid's structure.