Q51 of 78 Page 23

Will the measure of ∠ABC and of ∠CBD make measure of ∠ABD in Fig. 2.32?

Yes, because ∠ ABC and ∠ CBD together form ∠ ABD, i.e. ∠ ABC + ∠ CBD = ∠ ABD.


More from this chapter

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49

Which points in Fig. 2.31, appear to be mid-points of the line segments? When you locate a mid-point, name the two equal line segments formed by it.

 50

Is it possible for the same

(a) line segment to have two different lengths?


(b) angle to have two different measures?

 52

Will the lengths of line segment AB and line segment BC make the length of line segment AC in Fig. 2.33?

 53

Draw two acute angles and one obtuse angle without using a protractor. Estimate the measures of the angles. Measure them with the help of a protractor and see how much accurate is your estimate.