In ΔPQR,
oand o. Find all angles of a triangle
o. Find all angles of a triangle
70o, 52o, 58o
76o, 42o, 62o
76o, 46o, 58o
70o, 60o, 50o
from figure,
90o
180o
360o
270o
If one angle of a triangle is obtuse then that triangle is called ________
Acute angle triangle
Obtuse angled triangle
Right angled triangle
Equalateral triangle
The point of intersection of the altitudes of a triangle is called _________
Orthocentre
Circumcentre
Centroid
None of these
If all sides of a triangle are equal, then it is called __________
Scalene triangle
Equilatoral triangle
Isosceles triangle
If in a triangle, each angle is less than 90o, then it is called _________
Acute-angled
Right-angles triangle
Obtuse-angled triangle
In figure
<A + <B + <C
<A + <B
<A + <C
<B + <C
The sum of angles of a triangle is equal to
One right angle
Two right angles
Three right angles
Four right angles
The ________ of a triangle corresponding to any side, is the line joining the mid point of that side with the opposite vertex.
Median
Altitude
Perpendicular
A/An------------- of a triangle , corresponding to any side , is the length of perpendicular drawn from the opposite vertex
to that side.
Base