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# Corresponding points and sides of scaled shapes

Sal identifies corresponding sides and corresponding points in scale copies of figures.

## Want to join the conversation?

• what is in a line?
• hey hey hey hey hey hey
(1 vote)
• Can someone run me through the pythagorean theorem and how we use it in these diagrams? I did the practice just fine without it.
• The Pythagorean Theorem is the equation a^2 + b^2 = c^2. With a right triangle, you look for the hypotenuse, which is the side that does not make up the right angle. You look for the measures of the sides that make up the right angle and put them in the a^2 + b^2. Continue solving until the solution is found.
• when it is a scaled copy does this mean that it will always be smaller than the original?
• A scaled copy of a shape is when the proportions of a shape stay the same, only the size changes. For example, lets say you have a square with 4 units for each side. A scaled copy of that square could be each side being 8 units or all side being 2 units. As long as the numbers stay proportional. Also, our 4 units per side square has an area of 16 units squared, and it's scaled copies have an area of 4 units squared (for the square to units per side), and 64 units squared (for the square with 8 units per side). See? All the numbers are proportional! Even 3D shapes can have scaled copies with proportional surface area and volume. Hope this helps!
(1 vote)
• Its a dibolekol
• a line is straight
• but what if it isn't.. 🌈
(1 vote)
• so we can do it JK or KJ side cuz i just did that
(1 vote)
• Yep you can, I WOULD recommend up to down or left to right or KJ because yanno, JK LOL.

Sorry for late.
• does Sal make all the videos on Khan academy?
• No though he does make a lot of the, math ones if not all of them.
(1 vote)
• TOES? do yo like