As shown in the figure, given the line AB = 10cm, there is a point C on AB, and AC: BC = BC: AB, find the length of AC

Let AC be X. X: 10-x = 10-x: 10, and x = 15-radical 5

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1. Given that the segment AB at point C is 5:3, the segment AC at point D is 3:5, and the length of DC is 10cm, then the length of AB is?
2. As shown in the figure, given point C, segment AB is 5:3, and point D is the midpoint of AC. if DC = 10cm, calculate the length of ab
3. The segment AB of point C is 5:3, and the segment AB of point D is 3:5. Given DC = 10cm, find the length of ab
4. Given the line segment AB, extend AB to C so that BC = 1 / 2Ab, D is the midpoint of AB, DC = 10cm, and calculate the length of ab
5. As shown in the figure, take a point D on AB, take a point C on the extension line of AB, so that BD = 1 / 3AB = 1 / 4bc, and the midpoint of line AB and BC are m, n respectively, Mn = 7cm, Finding the length of line AB, CD
6. As shown in the figure, line BD equals one third AB equals one fourth CD, points m and N are the midpoint of line AB and CD respectively, and Mn equals 20 cm, so find the length of AC
7. As shown in the figure, ab = CD, CB = 1 / 3AB, points m and N are the midpoint of AB and CD respectively, and Mn = 8cm Anyway, there are two answers. What should I do In silence
8. As shown in the figure, line BD = 1 / 3AB = 1 / 4CD, points m and N are the midpoint of line AB and CD respectively, and Mn = 20cm |------|--|----|----|---------| A M D B N C
9. As shown in the figure, line AB = 8cm, C is the point on line AB, AC = 3.2cm, M is the midpoint of AB, n is the midpoint of AC. (1) find the length of line cm; (2) find the length of line Mn
10. Given that four points a, B, C and D are on the straight line L, ab = 10cm, CD = 4cm, and points m and N are the midpoint of AC and BD respectively, the length of segment Mn is calculated I'm in a hurry, By 20 o'clock today A total of 10 cases Please list them one by one DC = CD, so there are many cases I know the answer, To write a little paper, ..... And please use easy to understand language to answer,,,,,,
11. As shown in the figure, given that line AB = 10cm, point C is on the extension line of AB, and points m and N are the midpoint of AC and BC respectively, then how many centimeters is Mn equal to A————M—B——N——C
12. As shown in the figure: a -- m -- B -- N -- C, the line AB = 10cm is known. If C is a line segment, any point on the extended line, Mn is the midpoint of AC and BC respectively, Finding the length of Mn
13. It is known that B and C are any two points on the line ad, M is the midpoint of AB, and N is the midpoint of CD. If BC = B, Mn = a, find the length of the line ad. (expressed by a, b) A. M, B, C, N, D are arranged from left to right
14. Given that C is the midpoint of line AB, D is any point on AC, m n is the midpoint of ad dB, AC = 7, find the length of Mn
15. Given that the line segment AB = 1cm, extend AB to point C to make BC = 2Ab, and then extend Ba to point d to make ad = 3AB, then DC = () cm, DB = () cm, Da = () cm
16. Draw line AB = 1cm, extend AB to point C, make BC = Zab, and then extend Ba to point D, make ad = 3AB, then DC=____ cm,DA=____ cm.
17. Extend line AB to C, BC = 12ab, Ba to D, ad = 13ac. If CD = 16cm, find the length of ab
18. Given the line segment AB, extend the line segment AB to C to make BC = 1 / 2Ab, extend the line segment Ba to D to make ad = AB, take the midpoint h of DC, if BC = 5cm, find the length of ah fifty-five billion five hundred and fifty-five million five hundred and fifty-five thousand five hundred and fifty-five
19. If the line segment AB is known, extend the line segment AB to C so that BC = half AB, and extend the line segment AB to C in reverse so that ad = three-thirds AB, then the midpoint of the line segment CD is a point_
20. The segment AB is extended to C, so that ab = half AC, BC to D, so that CD = half BC. If ad = 70cm, calculate the length of ab Answer before 11:00 on August 5 ~ add 5 points~