| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.77 |
| Score | 0% | 75% |
What is 7a6 - 2a6?
| 9 | |
| 14a6 | |
| 5a6 | |
| a612 |
To combine like terms, add or subtract the coefficients (the numbers that come before the variables) of terms that have the same variable raised to the same exponent.
7a6 - 2a6 = 5a6
If a = c = 8, b = d = 4, and the blue angle = 52°, what is the area of this parallelogram?
| 5 | |
| 32 | |
| 24 | |
| 48 |
The area of a parallelogram is equal to its length x width:
a = l x w
a = a x b
a = 8 x 4
a = 32
If a = 8, b = 7, c = 5, and d = 7, what is the perimeter of this quadrilateral?
| 12 | |
| 20 | |
| 19 | |
| 27 |
Perimeter is equal to the sum of the four sides:
p = a + b + c + d
p = 8 + 7 + 5 + 7
p = 27
A quadrilateral is a shape with __________ sides.
2 |
|
5 |
|
3 |
|
4 |
A quadrilateral is a shape with four sides. The perimeter of a quadrilateral is the sum of the lengths of its four sides.
Which of the following statements about a triangle is not true?
perimeter = sum of side lengths |
|
area = ½bh |
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sum of interior angles = 180° |
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exterior angle = sum of two adjacent interior angles |
A triangle is a three-sided polygon. It has three interior angles that add up to 180° (a + b + c = 180°). An exterior angle of a triangle is equal to the sum of the two interior angles that are opposite (d = b + c). The perimeter of a triangle is equal to the sum of the lengths of its three sides, the height of a triangle is equal to the length from the base to the opposite vertex (angle) and the area equals one-half triangle base x height: a = ½ base x height.