Question #c2c8b

1 Answer
Feb 25, 2018

It’s a right triangle with #hat C# #90^@#

Explanation:

Slope #m_(AB) = (4-3) / (2-2) = 1/0 = oo#

Slope # m_(BC) = (4-3) / (2-1) = 1#

Slope #m_(CA) = (3-3) / (1-2) = 0 / -1 = 0#

Since product of slopes of AB & CA is -1,

It’s a right triangle with #hat C# #90^@#

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