Can the two outer corners of a triangle at different vertices be straight?

univerkov | November 29, 2020 | education

The sum of the measures of the inner and outer angles of the triangle is 180 degrees.
We get that there should be 2 right angles in the triangle.
The sum of the measures of the angles of a triangle is 180 degrees.
180-2 * 90 = 0.
We get that the triangle must have an angle of 0 degrees, which is impossible.

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