Constructions Test

Result

Constructions Test - 8

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Weekly Quiz Competition

Question 1
1 / -0

It is possible to construct a △ABC whose sides are_________.

A
4 cm, 3 cm and 8 cm

B
3 cm, 2 cm and 6 cm

C
3 cm, 4 cm and 5 cm.

D
2 cm, 3 cm and 5 cm

Solution

To construct a triangle whose three sides are given, the sum of two sides should always be greater than the third side.

As here, (3+4)>5; (3+5)>4; (4+5)>3

So,we can construct this triangle.
Question 2
1 / -0

In △ ABC if ∠B=∠C=30⁰, which of the following is the longest side?

A
AC

B
BC

C
AB

D
none

Solution

As , ∠B=∠C=30⁰ (Given)

Therefore, AB = AC (opposite sides of two equal angles are equal)

Since, two sides are equal, and the triangle is an abtuse angle isoceles triangle , therefore, the base BC will be the longest side of the triangle.
Question 3
1 / -0

In a △ ABC if ∠A=50⁰and ∠B=70⁰ then the shortest and the largest sides of the triangles are______.

A
AB,AC

B
AB,BC

C
none

D
BC,AC

Solution

As we know,The shortest side is equal to the shortest angle and the longest side is equal to the longest angle.

Thus, ∠A is shorter here, therefore, BC will be the shortest side and ∠B is longer thus AC will be the longest side.
Question 4
1 / -0

A rotating ray after making a complete rotation coincides with its initial position. The angle thus formed is______.

A
complete angle

B
right angle

C
straight angle

D
reflex angle

Solution

If a rotating ray after making a complete rotation coincides with the iinitial position, then, the angle thus formed will be of 360⁰ and this angle is known as Complete angle.