| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.31 |
| Score | 0% | 66% |
A(n) __________ is to a parallelogram as a square is to a rectangle.
quadrilateral |
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triangle |
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rhombus |
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trapezoid |
A rhombus is a parallelogram with four equal-length sides. A square is a rectangle with four equal-length sides.
Simplify (7a)(6ab) - (3a2)(7b).
| 130ab2 | |
| 21a2b | |
| 130a2b | |
| -21ab2 |
To multiply monomials, multiply the coefficients (the numbers that come before the variables) of each term, add the exponents of like variables, and multiply the different variables together.
(7a)(6ab) - (3a2)(7b)
(7 x 6)(a x a x b) - (3 x 7)(a2 x b)
(42)(a1+1 x b) - (21)(a2b)
42a2b - 21a2b
21a2b
Order the following types of angle from least number of degrees to most number of degrees.
right, obtuse, acute |
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acute, obtuse, right |
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right, acute, obtuse |
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acute, right, obtuse |
An acute angle measures less than 90°, a right angle measures 90°, and an obtuse angle measures more than 90°.
If a = 2, b = 6, c = 8, and d = 5, what is the perimeter of this quadrilateral?
| 21 | |
| 17 | |
| 25 | |
| 12 |
Perimeter is equal to the sum of the four sides:
p = a + b + c + d
p = 2 + 6 + 8 + 5
p = 21
When two lines intersect, adjacent angles are __________ (they add up to 180°) and angles across from either other are __________ (they're equal).
acute, obtuse |
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supplementary, vertical |
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vertical, supplementary |
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obtuse, acute |
Angles around a line add up to 180°. Angles around a point add up to 360°. When two lines intersect, adjacent angles are supplementary (they add up to 180°) and angles across from either other are vertical (they're equal).