Can a triangle be formed with the following angles? If yes, name the type of triangle.
(i) 60°, 60°, 60° 
(ii) 90°, 55°, 35° 
(iii) 60°, 40°, 42°
(iv) 60°, 90°, 90°
(v) 70°, 60°, 50°
(vi) 100°, 50°, 30°

Using the given information, write the type of triangle in the table given below

S.No.	\(\angle \)1	\(\angle \)2	\(\angle \)3	Type of triangle based on angles	Type of triangle based on sides
i.	60°	40°	80°	Acute angled triangle.	Scalene Triangle
ii.	50°	50°	80°
iii.	45°	45°	90°
iv.	55°	45°	80°
v.	75°	35°	70°
vi.	60°	30°	90°
vii.	25°	64°	91°
viii.	120°	30°	30°

Construct a line perpendicular to the given line through a point above it.

Draw a line and mark a point R at a distance of 4.8 cm above the line. Through R draw a line parallel to the given line.

Study the given figure and identify the following triangles.
(a) equilateral triangle
(b) isosceles triangles
(c) scalene triangles
(d) acute triangles
(e) obtuse triangles
(f) right triangles