Advertisements
Advertisements
Question
Can we have two acute angles whose sum is a right angle? Why or why not?
Solution
Yes, the sum of two acute angles may be equal to a right angle, e.g. 30° + 60° = 90°.
APPEARS IN
RELATED QUESTIONS
The bisectors of base angles of a triangle cannot enclose a right angle in any case.
Is the following statement true and false :
A triangle can have two obtuse angles.
Is the following statement true and false :
An exterior angle of a triangle is greater than the opposite interior angles.
In a triangle, an exterior angle at a vertex is 95° and its one of the interior opposite angle is 55°, then the measure of the other interior angle is
Find the unknown marked angles in the given figure:
One angle of a triangle is 60°. The other two angles are in the ratio of 5: 7. Find the two angles.
Calculate the unknown marked angles of the following figure :
Classify the following triangle according to sides:
The length of the three segments is given for constructing a triangle. Say whether a triangle with these sides can be drawn. Give the reason for your answer.
7 cm, 24 cm, 25 cm
The image of an object placed at a point A before a plane mirror LM is seen at the point B by an observer at D as shown in the following figure. Prove that the image is as far behind the mirror as the object is in front of the mirror.
[Hint: CN is normal to the mirror. Also, angle of incidence = angle of reflection].
