Can the following angles form a triangle?
(i) 80⁰, 70⁰, 50⁰ 
(ii) 56⁰, 64⁰, 60⁰

Find the measure of the missing angle in the given triangle ABC.

In ΔSTU, if SU = UT, ㄥSUT = 70⁰, ㄥSTU = x, find the value of x.

If two angles of a triangle having measures 65⁰ and 35⁰, find the measure of the third angle.

In ΔPQR, find the exterior angle, ㄥSRQ.

In ΔLMN, LM is extended to O. If ㄥL = 62⁰ and ㄥN = 31⁰, find ㄥNMO.

In the ΔABC shown in the figure, find the angel z.

In the given isoceles triangle IJK (Figure), if ㄥIKL = 128⁰, find the value of x.

With the given data in the Figure, find ㄥUWY. What do you infer about ㄥXWV?