Question

State which of the following are triangles:
Full solve answer​

Answer 1

Answer:

(b) is triangle and (d) is not a triangle

Step-by-step explanation:

b) as we all know that

the sum of all the angle of a triangle=180° (angle sum property of a triangle)

so, <P +<Q +< C =180°

57°+57°+57°=180°

Hence, ∆PQC is a triangle.

d) similarly,

<L + <M +<Z =180°

90°+90°+0°≠180

Hence, LMZ is not a triangle

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