3.
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The following sets of numbers represent the lengths of the sides of a triangle. Which is not a right-angled triangle? |
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15, 20, 25 |
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18, 24, 30 |
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16, 30, 36 |
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15, 36, 39 |
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4.
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A triangle has sides of length 4 cm, 5 cm and 6 cm. Which of these statements is not true? |
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The three angles add up to 180o |
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All three angles are acute |
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The triangle is scalene |
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The largest angle is 90o |
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5.
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The hypotenuse of a right-angled triangle is 26 cm. One of the shorter sides is 10 cm. How long is the third side? |
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30 cm |
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24 cm |
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16 cm |
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8 cm |
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6.
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A right-angled isosceles triangle has hypotenuse of length 15 cm. What are the angles at either end of the hypotenuse? |
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15o and 75o |
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30o and 60o |
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45o and 45o |
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20o and 70o |
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7.
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A rectangle has length 2.4 m and width 0.7 m. How long is its diagonal? |
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2.0 m |
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2.5 m |
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3.0 m |
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3.5 m |
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8.
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The foot of a ladder of length 3.75 m is 1.4 m away from a vertical wall. How high up the wall will the ladder reach (to the nearest 1 cm)? |
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3.84 m |
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3.48 m |
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3.24 m |
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3.18 m |
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9.
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The cross-section of a porch roof is an isosceles triangle with height 0.8 m and base 3.0 m. How long is each sloping roof section? |
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3.1 m |
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2.3 m |
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1.9 m |
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1.7 m |
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10.
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In a triangle, base 25 cm and height 12 cm, the perpendicular from the base to the opposite vertex divides the base in the ratio 3:2. How long are the other two sides (to 1dp)? |
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15.6 cm and 19.2 cm |
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16.3 cm and 18.9 cm |
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15.6 cm and 16.3 cm |
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18.9 cm and 19.2 cm |
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