195.In the figure, if ∠A + ∠B + ∠C + ∠D + ∠E + ∠F = k right angles, then k is:
2
3
4
4
C.
4
97 Views
Advertisement
Short Answer Type
196.In figure, find the values of x and y and then show that AB || CD.
90 Views
197.Let OA, OB, OC and OD be the rays in the anticlockwise direction starting from OA, such that ∠AOB = ∠COD = 100°, ∠AOD = ∠BOC = 80°. Is it true that AOC and BOD are straight lines? Justify your answer by drawing the figure.
124 Views
198.In figure, if AB || DC, ∠BDC = 30° and ∠BAD = 80°, find ∠x, ∠y and ∠z.
117 Views
Advertisement
199.The side BC of ∆ABC is produced on both sides. Prove that the sum of the two exterior angles so formed is greater than ∠A by 180°.
147 Views
200.An angle is equal to five times its supplement. Find the measure of the angle.