Which of the following groups of measurements will form a triangle? a.30°, 60°, 80°
b.20°, 90°, 90°
c.45°, 55°, 80°
d.3.5 in., 3.5 in., 7 in.

*let m∠cob = 50°30’, m∠aob = 70° and m∠aoc = 20°30’. could point c be in the interior of ∠aob? why? a. point c could be the interior of aob but it is not the only case b. point c is the interior of aob c. point c is not the interior of aob d. the given is not possible for the plane geometry answer