In the adjoining figure ∠BAC = 40^o then the value of ∠ACD  is

In the adjoining figure, ∠ ABC = ∠BDC = 90^o & BD = DC then the value of ∠DBC is

One of the base angles of an isosceles triangle is 40^o then  the vertex angle is?

In ΔABC, AB = AC and ∠B is more than 30^o but less than 45^o .Then m∠C cannot be

If PQ = QR and ∠P = 37 1/2^o. Then measure of ∠PQR is 

In the given figure AB = AC = AD, ∠B = 23^o and ∠D = 47^o. Then ∠BCD = 

The vertex angle of an isosceles triangle is 50^o then the base angles are?

In the given figure AB = AC and AD⊥BC. Which criterion can be used to prove congruency of shaded and unshaded triangles. 

In an isosceles right angled triangle, state the measure of equal angles