Measures of the two angles between hour and minutes hands of a clock at 9 O' clock are

1

(a)

60°, 300°

(b)

270°, 90°

(c)

75°, 285°

(d)

30°, 330°

If a bicycle wheel has 48 spokes, then the angle between a pair of two consecutive spokes is

1

(a)

\(\left( 5\frac { 1 }{ 2 } \right) ^{ 0 }\).

(b)

\(\left( 7\frac { 1 }{ 2 } \right) ^{ 0 }\).

(c)

\(\left( \frac { 2 }{ 11 } \right) ^{ 0 }\).

(d)

\(\left( \frac { 2 }{ 15 } \right) ^{ 0 }\).

Where will the hand of a clock stop, if it start at 5 and makes \(\frac { 1 }{ 4 } \) of a revolution clockwise?

1

(a)

7

(b)

8

(c)

9

(d)

10

The angle measure for half a revolution is

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(a)

90°

(b)

180°

(c)

360°

(d)

none of these.

The angle measure for one-fourth revolution is

1

(a)

90°

(b)

360°

(c)

180°

(d)

none of these.

Sum of two acute angles never be ______ angle.

1

(a)

Reflex or straight angle

An angle whose measure is less than that of a right angle is _____

1

(a)

acute angle

An angle whose measure is greater than that of a right angle is _______

1

(a)

obtuse angle

An angle whose measure is the sum of the measures of two right angles is ______

1

(a)

straight angle

When the sum of the measures of two angles is that of a right angle, then each one of them is ______.

1

(a)

acute angle

The measure of an obtuse angle < 90⁰.

1

(a) True

(b) False

The measure of a reflex angle > 180⁰.

1

(a) False

(b) True

The measure of one complete revolution = 360°.

1

(a) False

(b) True

If m\(\angle A\) = 53° and m \(\angle B\) = 35°, then m \(\angle A\) > m \(\angle B.\)

1

(a) False

(b) True

A scalene triangle has unequal measure of angle and also has unequal length of sides.

1

(a) False

(b) True

Do you know which direction is opposite to north? Which direction is opposite to west?

1

(a)

The direction opposite to north is south. The direction opposite to west is east.

Are there angles smaller than a right angle?

1

(a)

Yes

Are there angles greater than a right angle?

1

(a)

Yes

If AB丄CD, then should we say that CD丄AB also?

1

(a)

Yes

Is there any other alphabet which illustrates perpendicularity?

1

(a)

Yes.L.