What triangle has sides 23mm, 20mm, 13mm ... angles 62°,72°,46°

This kind of triangle is acute triangle because on the given three angles, none of them does not exceed more than 90°.

This triangle is acute because a right angle is 90 degrees and acute angles are those who have an angle of less than 90 degrees 62,72,46 are all less than 90 making this figure acute