Every right triangle fits that description.
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A right angle triangle has 2 acute angles that add up to 90 degrees, along with 1 right angle of 90 degrees.
A right triangle is a triangle with one of its angles being 90o. The requirements for the other two angles are that they both be acute and total to 90o. Therefore, the largest possible acute angle in a right triangle is 89.99999...o.
No a right angled triangle consists of two acute angles and one right angle
Yes, you have two congruent angles in each triangle, one right and one acute so the third angles must be equal also.
The question appears to relate to the angles of a triangle. 1) If angle 3 is acute then the other two angles can also be acute. In the case of an equilateral triangle all three angles are equal and acute. 2) If angle 3 is acute and one other angle is obtuse then the remaining angle is acute. 3) If angle 3 is acute and one other angle is a right angle then the remaining angle is acute.