All ISEE Middle Level Math Resources
Example Questions
Example Question #12 : How To Find The Area Of A Triangle
Note: Figure NOT drawn to scale.
Refer to the above diagram. Give the ratio of the area of the green region to that of the white region.
The correct answer is not given among the other choices.
The area of the entire rectangle is the product of its length and width, or
.
The area of the right triangle is half the product of its legs, or
The area of the green region is therefore the difference of the two, or
.
The ratio of the area of the green region to that of the white region is
That is, 11 to 4.
Example Question #2 : Area Of A Triangle
A triangle has a height of 9 inches and a base that is one third as long as the height. What is the area of the triangle, in square inches?
None of these
The area of a triangle is found by multiplying the base times the height, divided by 2.
Given that the height is 9 inches, and the base is one third of the height, the base will be 3 inches.
We now have both the base (3) and height (9) of the triangle. We can use the equation to solve for the area.
The fraction cannot be simplified.
Example Question #5 : How To Find The Area Of A Triangle
If the angles of a triangle are equal to , , and , what is the value of ?
Given that there are 180 degrees in a triangle,
Thus, 30 is the correct answer.
Example Question #41 : Geometry
The three angles of a triangle are labeled , , and . If is , what is the value of ?
Given that the three angles of a triangle always add up to 180 degrees, the following equation can be used:
Example Question #42 : Plane Geometry
In an equilateral triangle, which of the following is NOT true?
There is a 60 degree angle
All angles are equal
There is a 90 degree angle
All sides are equal
There is a 90 degree angle
In an equilateral triangle, all sides and angles are equal. All the angles equal 60 degrees, so there is a 60 degree angle.
Therefore, the answer choice, “There is a 90 degree angle” is not true and is the correct answer choice.
Example Question #51 : Geometry
The hypotenuse of a right triangle is feet; it has one leg feet long. Give its area in square inches.
The area of a right triangle is half the product of the lengths of its legs, so we need to use the Pythagorean Theorem to find the length of the other leg. Set :
The legs have length and feet; multiply both dimensions by to convert to inches:
inches
inches.
Now find half the product:
Example Question #51 : Geometry
What is the area (in square feet) of a triangle with a base of feet and a height of feet?
The area of a triangle is found by multiplying the base times the height, divided by .
Example Question #241 : Ssat Middle Level Quantitative (Math)
What is the area of a triangle with a base of and a height of ?
The formula for the area of a triangle is .
Plug the given values into the formula to solve:
Example Question #41 : Triangles
You have two traingular gardens next to each other. They both have a base of and a height of . What is the total area?
The area of a triangle is
and since there are two identical traingles, them put together will just be
.
So your answer will just be .
Example Question #45 : Plane Geometry
The above figure depicts Square with perimeter 240. , , and are the midpoints of , , and , respectively.
Give the area of Polygon .
Square has perimeter 240, so the length of each side is one fourth of this, or
.
Segment , as seen below, divides Polygon into two figures:
One figure is , with base and height 60 and 30, respectively. Its area is half their product, or
The other figure is Rect , whose length and width are 60 and 30, respectively. Its area is their product, or
Add these areas:
.
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