Card 0 of 16
A parallelogram has the base length of and the altitude of
. Give the area of the parallelogram.
The area of a parallelogram is given by:
Where is the base length and
is the corresponding altitude. So we can write:
Compare your answer with the correct one above
A parallelogram has a base length of which is 3 times longer than its corresponding altitude. The area of the parallelogram is 12 square inches. Give the
.
Base length is so the corresponding altitude is
.
The area of a parallelogram is given by:
Where:
is the length of any base
is the corresponding altitude
So we can write:
Compare your answer with the correct one above
The length of the shorter diagonal of a rhombus is 40% that of the longer diagonal. The area of the rhombus is . Give the length of the longer diagonal in terms of
.
Let be the length of the longer diagonal. Then the shorter diagonal has length 40% of this. Since 40% is equal to
, 40% of
is equal to
.
The area of a rhombus is half the product of the lengths of its diagonals, so we can set up, and solve for , in the equation:
Compare your answer with the correct one above
The length of the shorter diagonal of a rhombus is two-thirds that of the longer diagonal. The area of the rhombus is square yards. Give the length of the longer diagonal, in inches, in terms of
.
Let be the length of the longer diagonal in yards. Then the shorter diagonal has length two-thirds of this, or
.
The area of a rhombus is half the product of the lengths of its diagonals, so we can set up the following equation and solve for :
To convert yards to inches, multiply by 36:
Compare your answer with the correct one above
The longer diagonal of a rhombus is 20% longer than the shorter diagonal; the rhombus has area . Give the length of the shorter diagonal in terms of
.
Let be the length of the shorter diagonal. If the longer diagonal is 20% longer, then it measures 120% of the length of the shorter diagonal; this is
of , or
.
The area of a rhombus is half the product of the lengths of its diagonals, so we can set up an equation and solve for :
Compare your answer with the correct one above
Which of the following shapes is NOT a quadrilateral?
A quadrilateral is any two-dimensional shape with sides. The only shape listed that does not have
sides is a triangle.
Compare your answer with the correct one above
What other shape can a parallelogram be classified as?
A parallelogram can not be classified as a square because a square has to have equal sides, but a parallelogram can have two different side lengths, as long as the opposite side lengths are equal.
A parallelogram can not be classified as a rectangle because a rectangle has to have angles, and a parallelogram does not.
A parallelogram can not be classified as a triangle because a parallelogram has to have sides and a triangle only has
sides.
A parallelogram can not be classified as a rhombus because a rhombus has to have equal sides and a parallelogram does not.
A parallelogram has four sides, and all shapes with four sides are quadrilaterals.
Compare your answer with the correct one above
What is the main difference between a square and a rectangle?
The only difference between a rectangle and a square is their side lengths. A square has to have equal side lengths, but the opposite side lengths of a rectangle only have to be equal.
Compare your answer with the correct one above
What two shapes can a square be classified as?
A square can also be a rectangle and a rhombus because a rectangle has to have at least sets of equal side lengths and a rhombus has to have
equal side lengths, like a square, and at least
sets of equal angles.
Compare your answer with the correct one above
What is the main difference between a triangle and a rectangle?
Out of the choices given, the only characteristic used to describe shapes is the number of sides. A triangle has sides and a rectangle has
sides.
Compare your answer with the correct one above
Which two shapes have to have right angles?
By definition, the only two quadrilaterals that have to have right angles, are the square and the rectangle.
Compare your answer with the correct one above
Which of the shapes is NOT a quadrilateral?
A quadrilateral is a sided shape. The only shape listed that does not have
sides is a hexagon, which has
sides.
Compare your answer with the correct one above
Which of the following shapes is NOT a parallelogram?
A rectangle, square, and rhombus can all be classified as a parallelogram because each shape has opposite side lengths that are equal. A kite does not.
Compare your answer with the correct one above
What is the difference between a trapezoid and a isosceles trapezoid?
By definition, an isosceles trapezoid has to have equal base angles, but a trapezoid does not have to have equal angles.
Compare your answer with the correct one above
Which shape is NOT a quadrilateral?
A quadrilateral has to have sides, a circle does not have any sides.
Compare your answer with the correct one above
Figure NOT drawn to scale.
The above depicts Rhombus , which has perimeter 80.
.
Give the area of Rhombus .
The area of any parallelogram is the product of the length of its base and that of a corresponding altitude. We can take as a base and perpendicular
as an altitude.
All four sides of a rhombus have the same length, so we can find by dividing the perimeter - the sum of the lengths of the four sides - by 4:
Now multiply the lengths of this base and the altitude to get the area:
Compare your answer with the correct one above