Take three noncollinear points A, B, and C on a page of your notebook. Join AB, BC, and CA. What
figure do you get?
Name:
(i) the side opposite to ∠C
(ii) the angle opposite to the side BC
(iii) the vertex opposite to the side CA
(iv) the side opposite to the vertex B
The angles of a triangle are in the ratio 1 : 3: 5. Find the measure of each of the angles.
One of the acute angles of a right triangle is 50deg. Find the other acute angle.
How many parts does a triangle have?
(a) 2
(b) 3
(c) 6
(d) 9
With the angles given below, in which case the construction of a triangle is possible?
(a)30^{0}, 60^{0}, 70^{0}
(b)50^{\circ}, 70^{\circ}, 60^{\circ}
(c)40^{0}, 80^{6}, 65^{0}
(d)72^{0}, 28^{0}, 90^{0}
One of the base angles of an isosceles triangle is 70deg. The vertical angle is
(a) 60deg
(b) 80deg
(c) 40deg
(d) 35deg
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