1 right angle and 2 acute angles with the same measure
1 obtuse angle and 2 acute angles with the same measure:
1) Since the mentioned triangle has two congruent sides of 4cm, this is an Isosceles triangle:
2) So, a triangle has a sum of interior angles equal to 180º. An Isosceles triangle has two congruent angles. Examining the options, we can state the possible true answers are:
-1 right angle (90º) and 2 acute angles (45º and 45º) with the same measure
- 1 obtuse angle (> 90º) and 2 acute angles with the same measure:
(100º+40º+40º)
3) Hence, these are the answers:
1 right angle and 2 acute angles with the same measure
- 1 obtuse angle and 2 acute angles with the same measure: