
How many obtuse angles does a triangle have?

Important Questions on Lines and Angles
What is the number of obtuse angles in the given figure?




Find the measure of the angle shown in each figure. (First estimate with your eyes and then find the actual measurement with a protractor).

From these two angles which has larger measure? Estimate and then confirm by measuring them.



Find the angle measures between the hands of the clocks in each figure:


Measure given in the given figure and construct an angle equal to .

Measure and classify each angle:
Angle | Measure | Type |



How many degrees are there in the angle between the hour hand and the minute hand of a clock, when it is
clock?

Match the following:
(i) | Straight angle | (a) | Less than one-fourth of a revolution |
(ii) | Right angle | (b) | More than half of revolution |
(iii) | Acute angle | (c) | Half of a revolution |
(iv) | Obtuse angle | (d) | One-fourth of a revolution |
(v) | Reflex angle | (e) | Between and of a revolution |





Which angle has a large measure? First estimate and then measure the angle and angle .

Construct an angle of with the help of a protractor.

