What do you
mean by "can't understand" the two exercises? (I'm assuming the "ones" are exercises related to the two drawn figures.) To what "angles" are you making reference? When you say you "have no clue", does this mean that you're trying to "study" for a placement test, but haven't actually ever taken geometry, so you don't understand what the exercises mean?
For the first exercise, the drawing appears to be something along the lines of the following:
Code:
lines:
6x+18 /
g ------ ----/----
10y+2 /
/
3x+9y /
h -------/--------
/
I am assuming that "g" and "h" are names for the two horizontal-ish lines. Is this correct? If so, are these lines meant to be
parallel? If not, for what do "g" and "h" stand? Is the slanty line meant to be a transversal, or does it stand for something else? I'd thought that "6x + 18" and "10y + 2" weren't meant to be a
fraction -- but the line between them does not appear to be connected to the rest of that horizontal-ish line, so maybe they
are a fraction? Either way, for what do these expressions stand? How does "3x + 9y" relate? What are the instructions? Your subject line says to "find all angles", but no angles are labelled, which makes it kinda hard to know if you've arrived at the correct values (when checking in the back of the book).
For what I'm assuming is the second exercise, you have a drawing that looks kind of like this:
Code:
nested triangles:
/\
/70\
/ \
/ \
/ \
/ \
/ .. \
/30 .' 3'. 29\
/ .' '. \
/.' 1 2 '.\
*--------------------*
Unfortunately, since no other information is provided (such as whether the outer
triangle is isosceles; if "1", "2", and "3" are numbers of angles, or if they're [what I'm assuming are]
angle measures, like "70", "30", and "29"), it would not appear that this question in answerable. Sorry.
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