Question

3. Take BC = 5 cm. Draw BC I AB and AD 1 AB with length of BC and AD as 5 cm
each. Join CD. Explain, why CD || AB and BC || AD.
[HOTS]
4. Draw a ray AB. Construct ZBAP 60° with the help of compass. From AP, cut off
AC=4cm. Construct ZACD = 60°. Is DC || AB? Why?​

Answer 1

Answer:

Step-by-step explanation:

In right angles triangle BAC, AB=5cm and AC=12cm

Area of triangle=

2

1

​

×base×height=

2

1

​

×AB×AC

=

2

1

​

×5×12=30cm

2

Now, in ΔABC,

Area of triangle ABC=

2

1

​

×BC×AD

⇒30=

2

1

​

×13×AD

⇒ AD=

13

30×2

​

=

13

60

​

cm.