Lines and Angles Maths - Lines and Angles

Write the correct answer in the following: In Fig. if $\text{AB}||\text{CD}||\text{EF},\text{PQ}||\text{RS},$ $\angle\text{RQD}=25^\circ$ and $\angle\text{CQP}=60^\circ,$ then $\angle\text{QRS}$ is equal to.

• A
  $85^\circ$
• B
  $135^\circ$
• ✓
  $145^\circ$
• D
  $110^\circ$

Answer: C.

• ✓
  An acute angled triangle.
• B
  An obtuse angled triangle.
• C
  A right triangle.
• D
  An isosceles triangle.

Answer: A.

• A
  $60^\circ$
• ✓
  $40^\circ$
• C
  $80^\circ$
• D
  $20^\circ$

Answer: B.

Write the correct answer in the following: In Fig. $POQ$ is a line.The value of $x$ is.

• ✓
  $20^\circ$
• B
  $25^\circ$
• C
  $30^\circ$
• D
  $35^\circ$

Answer: A.

• A
  $37\frac{1}{2}^\circ$
• ✓
  $52\frac{1}{2}^\circ$
• C
  $72\frac{1}{2}^\circ$
• D
  $75^\circ$

Answer: B.