All SSAT Upper Level Math Resources
Example Questions
Example Question #131 : Properties Of Triangles
Given: and
;
and
.
Which of the following statements would not be enough, along with what is given, to prove that ?
The given information is enough to prove the triangles similar.
The given information is enough to prove the triangles similar.
Two pairs of corresponding angles are stated to be congruent in the main body of the problem; it follows from the Angle-Angle Similarity Postulate that the triangles are similar. No further information is needed.
Example Question #132 : Properties Of Triangles
.
. Which of the following is the ratio of the area of
to that of
?
The similarity ratio of to
is equal to the ratio of two corresponding sidelengths, which is given as
; the similarity ratio of
to
is the reciprocal of this, or
.
The ratio of the area of a figure to that of one to which it is similar is the square of the similarity ratio, so the ratio of the area of to that of
is
Example Question #5 : How To Find If Two Acute / Obtuse Triangles Are Similar
;
Which of the following is true about ?
is scalene and acute.
None of the other responses is correct.
is isosceles and acute.
is scalene and obtuse.
is isosceles and obtuse.
is scalene and obtuse.
Corresponding angles of similar triangles are congruent, so the measures of the angles of are equal to those of
.
Two of the angles of have measures
and
; its third angle measures
.
One of the angles having measure greater than makes
- and, consequently,
- an obtuse triangle. Also, the three angles have different measures, so the sides do as well, making
scalene.
Example Question #1 : How To Find If Two Acute / Obtuse Triangles Are Similar
;
;
.
Which of the following correctly gives the relationship of the angles of ?
Corresponding angles of similar triangles are congruent, so .
Consequently,
Therefore,
.
Example Question #3 : How To Find If Two Acute / Obtuse Triangles Are Similar
;
.
Which of the following correctly gives the relationship of the angles of ?
Corresponding sides of similar triangles are in proportion; since ,
Therefore, .
The angle opposite the longest (shortest) side of a triangle is the angle of greatest (least) measure, so
.
Example Question #141 : Properties Of Triangles
.
Order the triangles by perimeter, least to greatest.
and
are corresponding sides of their respective triangles, and
, so it easily follows from proportionality that each side of
is shorter than its corresponding side in
. Therefore,
is of lesser perimeter than
. By the same reasoning, since
,
is of lesser perimeter than
.
The correct response is
Example Question #801 : Ssat Upper Level Quantitative (Math)
.
.
Evaluate .
Corresponding sides of similar triangles are in proportion, so
Therefore, as well.
Again, by similarity,
Example Question #51 : Acute / Obtuse Triangles
.
.
Which of the following scenarios is possible ?
I) is an acute triangle.
II) is an obtuse triangle with
the obtuse angle.
III) is an obtuse triangle with
the obtuse angle.
IV) is an obtuse triangle with
the obtuse angle.
II and IV only
II, III, and IV only
I, II, III, and IV
I only
I and III only
I and III only
Corresponding angles of similar triangles are congruent, so and
. Since
, it follows that
. Since a triangle cannot have two angles that measure more than
, both
and
are acute. No information is given about
, so
can be acute, right, or obtuse. Therefore, scenarios (I) and (III) are possible, but not (II) or (IV).
Example Question #143 : Properties Of Triangles
;
.
Which of the following is true about ?
is scalene and acute.
is isosceles and obtuse.
None of the other responses is correct.
is isosceles and acute.
is scalene and obtuse.
is isosceles and acute.
Corresponding sides of similar triangles are in proportion, so
and
.
Substituting, we have from the first statement
Since ,
is isosceles.
We can compare the sum of the squares of the lesser two sides to that of the greatest.
The sum of the squares of the lesser two sides is greater than the square of the third, so is acute.
Example Question #144 : Properties Of Triangles
;
Which of the following is true about ?
None of the other responses is correct.
is isosceles and acute.
is scalene and acute.
is scalene and obtuse.
is isosceles and obtuse.
is isosceles and acute.
Corresponding angles of similar triangles are congruent, so the measures of the angles of are equal to those of
.
, so
. Also
, so
.
All three angles have measure less than , so
is acute. Also, two of the angles are congruent, so by the Converse of the Isosceles Triangle Theorem,
is isosceles.
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All SSAT Upper Level Math Resources
