| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.00 |
| Score | 0% | 60% |
If a = c = 6, b = d = 3, and the blue angle = 66°, what is the area of this parallelogram?
| 24 | |
| 18 | |
| 7 | |
| 8 |
The area of a parallelogram is equal to its length x width:
a = l x w
a = a x b
a = 6 x 3
a = 18
Which types of triangles will always have at least two sides of equal length?
isosceles and right |
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equilateral and right |
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equilateral, isosceles and right |
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equilateral and isosceles |
An isosceles triangle has two sides of equal length. An equilateral triangle has three sides of equal length. In a right triangle, two sides meet at a right angle.
A right angle measures:
90° |
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360° |
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45° |
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180° |
A right angle measures 90 degrees and is the intersection of two perpendicular lines. In diagrams, a right angle is indicated by a small box completing a square with the perpendicular lines.
Find the value of c:
7c + z = 9
-5c - 2z = -1
| 1\(\frac{8}{9}\) | |
| -1\(\frac{4}{5}\) | |
| -1\(\frac{1}{7}\) |
You need to find the value of c so solve the first equation in terms of z:
7c + z = 9
z = 9 - 7c
then substitute the result (9 - 7c) into the second equation:
-5c - 2(9 - 7c) = -1
-5c + (-2 x 9) + (-2 x -7c) = -1
-5c - 18 + 14c = -1
-5c + 14c = -1 + 18
9c = 17
c = \( \frac{17}{9} \)
c = 1\(\frac{8}{9}\)
If the length of AB equals the length of BD, point B __________ this line segment.
bisects |
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intersects |
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trisects |
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midpoints |
A line segment is a portion of a line with a measurable length. The midpoint of a line segment is the point exactly halfway between the endpoints. The midpoint bisects (cuts in half) the line segment.