6
12 - Understanding Elementary Shapes: Worksheet-12.1
Name:
Date:
1. How many degrees are there in 2 rd of a complete angle?
3
[a] 60°
[b] 240°
[c] 180°
[d] 200°
2. A perpendicular from a vertex to the opposite side of a triangle is known as ______.
[a] altitude
[b] median
[c] bisector
[d] all of these
3. In a quadrilateral, if all the sides and diagonals are equal, it is called a/an _________.
[a] square
[b] rectange
[c] rhombus
[d] all of these
[c] 16
[d] 20
4. How many edges a cube has?
[a] 10
[b] 12
5. Name all the triangles in the given figure and classify them in the following categories.
b. Isosceles triangle
a. Right angled triangle
4 cm
D
c. Obtuse angled triangle
C
O
3 cm
3 cm
A
4 cm
B
6. In a right angled triangle ABC, AB is perpendicular to BC and ∠C = 50°. What is the measure of the
third angle?
7. Where will the minute hand of a clock stop if it starts from:
a. 3 and turns through one straight angle.
b. 1 and turns through three right angles.
c. 7 and turns through one right angle.
d. 5 and turns through a complete angle.
8. State ‘True’ or ‘False’ for the following:
a. Every square is a rectangle.
b. Every rhombus is a parallelogram.
c. Every square is a rhombus.
d. Every parallelogram is a square.
e. Opposite angles of a parallelogram are equal.
9. Write the number of faces, vertices and edges in a hexagonal pyramid.
10.Classify each of the following triangles as a scalene, isosceles or equilateral having following measure of
sides. Give reason also.
a. 7 cm, 6 cm, 5 cm
b. 3.2 cm, 5.2 cm, 3.2 cm
d. 4 cm, 2 cm, 4 cm
e. 2 cm, 3 cm, 4 cm
Grade:
Teacher’s signature:
c. 6 cm, 6 cm, 6 cm