All Intermediate Geometry Resources
Example Questions
Example Question #41 : Trapezoids
Find the value of if the area of the trapezoid below is .
The formula to find the area of a trapezoid is
.
Substitute in the values for the area, a base, and the height. Then solve for .
Example Question #301 : Plane Geometry
Find the value of if the area of the trapezoid below is .
The formula to find the area of a trapezoid is
.
Substitute in the values for the area, a base, and the height. Then solve for .
Example Question #303 : Intermediate Geometry
The area of the trapezoid below is . Find the length of .
Cannot be determined from the information given.
Start by drawing in the height, , to form a right triangle.
Use the Pythagorean Theorem to find the length of .
Now that we have the height, plug in the given information into the formula to find the area of the trapezoid.
Keep in mind that .
The question asks you to find the length of .
Example Question #41 : Trapezoids
Find the length of . The area of the trapezoid is . Round to the nearest hundredths place.
Cannot be determined from the information given.
First, draw in the height .
First, find by using .
Now, plug in the values for area, height, and one base to find the length of the second base, .
Example Question #43 : Trapezoids
The area of the trapezoid below is . Find the length of . Round to the nearest hundredths place.
First, draw in the height.
First, find the height by using .
Now, plug in the values for area, height, and one base to find the length of the second base, .
Example Question #304 : Intermediate Geometry
The area of the trapezoid below is . Find the length of . Round to the nearest hundredths place.
First, draw in the height.
First, find the height by using .
Now, plug in the values for area, height, and one base to find the length of the second base, .
Example Question #131 : Quadrilaterals
Given: Quadrilateral such that and
True, false, or undetermined: Quadrilateral is a trapezoid.
True
Undetermined
False
True
Quadrilateral has at least one pair of parallel sides, and . The figure is, by definition, a parallelogram if and only if , and, by definition, a trapezoid if and only if . Opposite sides of a parallelogram are also congruent; since , Quadrilateral is not a parallelogram. It is therefore a trapezoid.
Example Question #45 : Trapezoids
A trapezoid has height 20 inches and area 640 square inches. Which of these choices can represent the lenghts of the two bases of the trapezoid?
32 inches and 32 inches
2 inches and 60 inches
18 inches and 44 inches
25 inches and 35 inches
27 inches and 37 inches
27 inches and 37 inches
We can apply the area formula here.
The sum of the bases must be 64 inches. We check each one of these choices, except for 32 inches and 32 inches, which can be eliminated as the bases cannot be of the same length.
Only 27 and 37 have 64 as a sum, so this is the correct choice.