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Geometry — Chapter Test

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Q1
Which is the odd one out (three are types of angle)?
Parallel describes lines, not an angle; the others are angles.
Q2
45° is to acute as 120° is to ___ ?
45° is acute and 120° is obtuse.
Q3
Which lines never meet?
Parallel lines never meet.
Q4
A right angle is to 90° as a straight angle is to ___ ?
A straight angle measures 180°.
Q5
An angle less than 90° is called ___ ?
An angle less than 90° is acute.
Q6
A right angle measures ___ degrees.
A right angle is 90°.
Q7
If the radius of a circle is 6 cm, the diameter is ___ ?
Diameter = 2 × 6 = 12 cm.
Q8
The longest chord of a circle is the ___ ?
The diameter is the longest chord.
Q9
How many lines of symmetry does a square have?
A square has 4 lines of symmetry.
Q10
The corner of a book or a table top is an example of a ___ ?
A corner makes a right angle (90°).
Q11
At 3 o'clock, the two hands of a clock make a ___ ?
At 3:00 the hands are at 90° — a right angle.
Q12
A dice-shaped box has how many faces?
A cube has 6 faces.
Q13
An angle of 90° and an angle of 30° are joined to make one angle of 120°. This new angle is ___ ?
120° is more than 90°, so it is obtuse.
Q14
A circle has a diameter of 16 cm. What is its radius?
Radius = diameter ÷ 2 = 16 ÷ 2 = 8 cm.
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