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

Measure of ∠A =

Measure of ∠B =

Write down the measures of

(a) some acute angles.

(b) some obtuse angles.

(Give two examples of each).

Measure the angles given below, using the Protractor and write down the measure.

From the following two angles, which has longer measure? Estimate and then confirm by measuring them.

Fill in the blanks with acute, obtuse, right or straight :

(a) An angle whose measure is less than that of a right angle is ………. .

(b) An angle whose measure is greater than that of a right angle is ………… .

(c) An angle whose measure is the sum of the measure of two right angle is ….. .

(d) When the sum of the measures of two angles is that of a right angle, then each one of them is ………… .

(e) When the sum of the measures of two angles is that of a straight angle and if one of them is acute, then the other should be ……….. .