Question
A right triangle has one right angle and two ____ angles.
- obtuse
- acute
- congruent
Hint:
using the property of sum of angles in the triangle is 180.Find the relation between angles other two angles.
The correct answer is: acute
ANS :- Option B
Explanation :-
Let the triangle be PQR, angle Q measure 90º.
∠P +∠Q +∠R = 180º (sum of angles in a triangle)
∠P + 90º +∠R = 180º
∠P +∠R = 180º - 90º = 90º
If sum of two angles is 90 Then each angle is less than 90 .
Then we can say both angles are acute angles when a Right triangle has 1 right angle
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