All Intermediate Geometry Resources
Example Questions
Example Question #1 : How To Find The Length Of The Side Of A Parallelogram
Given: Quadrilateral with diagonal ; .
True or false: From the information given, it follows that Quadrilateral is a parallelogram.
True
False
True
Corresponding parts of congruent triangles are, by definition, congruent. Thus, from the statement , it follows that:
and
Quadrilateral therefore has two sets of congruent opposite sides. This is a sufficient condition for the quadrilateral to be a parallelogram.
Example Question #212 : Quadrilaterals
Quadrilateral is both a rhombus and a rectangle.
True or false: Quadrilateral must be a square.
True
False
True
A rhombus is defined to be a parallelogram with four congruent sides; a rectangle is defined to be a parallelogram with four right angles.
A square is defined to be a parallelogram with four congruent sides and four right angles. If a parallelogram is both a rhombus and a rectangle, then it fits both characteristics and is therefore a square.
Example Question #1 : How To Find The Area Of A Parallelogram
The perimeter of a square is . If the sides of the square are reduced by a factor of two, what is the area of the new square?
The perimeter of a square is geven by and the area of a square is given by .
Thus
so .
The original side is reduced by a factor of which results in a new side of . The area of the new square is geven by
Example Question #2 : How To Find The Area Of A Parallelogram
Find the area of the box in square inches:
The answer is . You can find the area of this box by multiplying the length by its width:
Foil
If you chose , you added the sides to get the perimeter.
Just remember, the width is 12 added to . Not 12 times the side of .
Example Question #2 : How To Find The Area Of A Parallelogram
If all angles are right angles in the figure below, what is the total area of the figure?
The answer is .
To get the area, you would need to find the missing sides. Since the horizontal top is inches total, the bottom must be inches total. Thus you would subtract to get for the missing bottom horizontal side.
The vertical right side is inches total. Then you would subtract to get for the missing vertical side.
Then you would have to split the figure into 3 different boxes and find the area of each one. Then you would add the area of each box
Example Question #1 : How To Find The Area Of A Parallelogram
What is the area of a parallelogram if the base is , and the height is ?
The formula for the area of a parallelogram is:
So, we are given all of the information that we need to solve this problem. Substitute the provided values into the equation and simplify:
Example Question #5 : How To Find The Area Of A Parallelogram
What is the area of a parallelogram if the base is and the height is ?
The formula for the area of a parallelogram is:
Substitute in the provided values and simplify to calculate the correct answer:
Example Question #6 : How To Find The Area Of A Parallelogram
Find the area of a parallelogram if the base is and the height is .
The formula for the area of a parallelogram is:
Substitute the values provided in the question:
Use the FOIL method to simplify:
Example Question #6 : How To Find The Area Of A Parallelogram
What is the area of a parallelogram if the base is and the height is ?
The formula for the area of a parallelogram is:
Substitute the values provided in the problem and solve to calculate the correct answer:
Example Question #1 : How To Find The Area Of A Parallelogram
If the height of the parallelogram is half of the length of the rectangle, then find the area of the shaded region in the figure.
In order to find the area of the shaded region, we must first find the areas of the rectangle and parallelogram.
Recall how to find the area of a rectangle:
Substitute in the given length and height to find the area of the rectangle.
Next, find the area of the parallelogram.
Recall how to find the area of a parallelogram:
We need to find the height of the parallelogram. From the question, we know the following relationship:
Substitute in the length of the rectangle to find the height of the parallelogram.
Now, substitute in the height and the given length of the base to find the area of the parallelogram.
Now, we are ready to find the area of the shaded region by subtracting the area of the parallelogram from the area of the rectangle.
Solve.