Can we have two acute angles whose sum is(a) an acute angle? Why or why not?

The correct answer is (D) Two right angles.

The correct answer is (D) Two right angles.

(a) Yes. The sum of two obtuse angles is always greater then 180°. (b) No. The sum of two obtuse angles is always greater than 180°, but less than 360°.

(i)No, because sum of two acute angles is less than 180°.  (ii) No, because sum of two obtuse angles is more than 180°.  (iii) Yes, because sum of two right angles is...

(i) No,  Two right angles would up to 180o.,So the third angle becomes zero. This is not possible, so a triangle cannot have two right angles. [Since sum of angles in...

Correct answer is (c) acute

Correct answer is (c) (iii) only

It is possible to have a triangle in which two angles are acute. True

If two angles of a triangle are equal, the third angle is also equal to each of the other two angles. False

If hypotenuse and an acute angle of one right triangle are equal to the hypotenuse and an acute angle of another right triangle, then the triangles are congruent. True