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Mathematics 9 Online
OpenStudy (saylilbaby):

@Ahsome Determine the longest side in ΔDEF. A) segment EF B) segment DE C) segment FE D) segment DF

OpenStudy (saylilbaby):

OpenStudy (ahsome):

D) DF

OpenStudy (saylilbaby):

Shown here are the three essential steps in a proof of the Pythagorean Theorem. Why is the color blue kept the same in all three steps? A) because the blue areas remain constant in size B) because the blue areas are converted to squares C) because blue is used on the edges of the squares D) because the blue regions are rearranged to form triangles

OpenStudy (ahsome):

A) Because the blue areas remain constant in size

OpenStudy (saylilbaby):

If ΔAED is dilated to points A, C, and B, which statement is true? A) ΔAED ~ ΔACB B) ΔAED ≅ ΔACB C) The area of ΔAED is half the area of ΔACB D) The perimeter of ΔAED is one-fourth the area of ΔACB

OpenStudy (saylilbaby):

@triciaal

OpenStudy (triciaal):

for part a I would choose D none of the sizes changed but the blue rectangles were split diagonally into triangles then rearranged. kept the color to show where they are

OpenStudy (triciaal):

agree the factor is 2? AE = 1/2(AC); AD = 1/2(AB)

OpenStudy (triciaal):

similar figures

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