| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.11 |
| Score | 0% | 62% |
A(n) __________ is to a parallelogram as a square is to a rectangle.
rhombus |
|
triangle |
|
quadrilateral |
|
trapezoid |
A rhombus is a parallelogram with four equal-length sides. A square is a rectangle with four equal-length sides.
If the base of this triangle is 3 and the height is 7, what is the area?
| 66 | |
| 50 | |
| 90 | |
| 10\(\frac{1}{2}\) |
The area of a triangle is equal to ½ base x height:
a = ½bh
a = ½ x 3 x 7 = \( \frac{21}{2} \) = 10\(\frac{1}{2}\)
When two lines intersect, adjacent angles are __________ (they add up to 180°) and angles across from either other are __________ (they're equal).
vertical, supplementary |
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acute, obtuse |
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supplementary, vertical |
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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).
If side x = 8cm, side y = 5cm, and side z = 12cm what is the perimeter of this triangle?
| 32cm | |
| 25cm | |
| 28cm | |
| 36cm |
The perimeter of a triangle is the sum of the lengths of its sides:
p = x + y + z
p = 8cm + 5cm + 12cm = 25cm
Simplify (5a)(5ab) - (6a2)(5b).
| 55a2b | |
| -5a2b | |
| 5ab2 | |
| 110a2b |
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.
(5a)(5ab) - (6a2)(5b)
(5 x 5)(a x a x b) - (6 x 5)(a2 x b)
(25)(a1+1 x b) - (30)(a2b)
25a2b - 30a2b
-5a2b