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gauss58
4 months ago

A parallel to the base side at a distance of 2 or x helps for understanding.

plankton986
4 months ago

If the figures weren't blunt, I would know how it is.

Then expand the figures accordingly and calculate them.

plankton986
4 months ago
Reply to  12345678557

correct

merkurus
4 months ago

Below is a calculation according to the set of beams.
View image 2. The orange triangle.
This thus represents a ray set.
The purple dimensions are easy to calculate in the head.
Red measurements are given.

Task 11a
x1 / 6 = 7 / 21
x1 = 7 / 21 * 6
x1 = 7 / 21 * 6
x1 = 2
x = x1 + 2
x = 2 + 2
x = 4

bergquelle72
4 months ago

a) Drag a parallel to the base side (7+14) which is applied to the upper point of the right perpendicular (2). Then you have an auxiliary structure to which you can apply the ray set. From this you can calculate x-2 and you have x.

(b) is similar, you calculate 10-x and thus also x.

Halbrecht
4 months ago

so it is

y/2 = (y+7)/x

bergquelle72
4 months ago
Reply to  Halbrecht

Now you've slipped.

An equation with two unknowns… that will be nothing.

You should have betrayed that you can set up a second equation that includes the 8 .

Then you have two equations with two unknowns.

Gottfried757
4 months ago

The two tasks can be solved by extending the hypothenuse and the ancathete by the value y until they intersect.

Task a)

y/2=(y+14+7)/8|×8

4y=y+21

y=7

x/(7+7)=2/7|×14

x=4

(b)

x/y=10/(y+12)

x/y=20/(y+16+12)=20/(y+28)

10/(y+12)=20/(y+28)

(y+12)/10=(y+28)/20|×20

2y+24=y+28

y=4

x/4=10/(4+12)

x/4=10/16|×16

4x=10

x=2.5