Practice the AP 9th Class Maths Bits with Answers Chapter 13 Geometrical Constructions on a regular basis so that you can attempt exams with utmost confidence.
AP State Syllabus 9th Class Maths Bits 13th Lesson Geometrical Constructions with Answers
Choose the correct answer :
Question 1.
If in the figure, \(\overline{\mathbf{X Y}}\) is the perpendicular bisector to AB then AX =
A) AY
B) BY
C) BX
D) XY
Answer:
C) BX
Question 2.
In the above figure, ΔAXB is
A) equilateral
B) isosceles
C) scalene
D) right triangle
Answer:
B) isosceles
Question 3.
In the above figure, ΔAXO ≅
A) ΔAYO
B) ΔBYO
C) ΔAXB
D) ΔBXO
Answer:
D) ΔBXO
Question 4.
In the figure, \(\overrightarrow{\mathrm{BF}}\) is the bisector of ∠ABC then
A) ∠ABF = ∠CBF
B) ∠ABF = ∠ABC
C) ∠ABF + ∠CBF = 90°
D) ∠ABF + ∠CBF = 180°
Answer:
A) ∠ABF = ∠CBF
Question 5.
From the figure, ΔABD ΔCBD by
A) S.S.S
B) A.S.A
C) S.A.S
D) R.H.S
Answer:
A) S.S.S
Question 6.
∠DAC =
A) ∠B + ∠A
B) ∠A + ∠C
C) ∠B + ∠C
D) ∠A + ∠B + ∠C
Answer:
C) ∠B + ∠C
Question 7.
Angles in same circle segment are
A) Complementary
B) Supplementary
C) Equal
D) Unequal
Answer:
C) Equal
Question 8.
Angle in the semi-circle is
A) right angle
B) 180°
C) acute angle
D) obtuse angle
Answer:
A) right angle
Question 9.
The process of drawing a geometrical figure by using a compass and straight
edge is called
A) geometrical proof
B) hypothesis
C) geometrical construction
D) none
Answer:
C) geometrical construction
Question 10.
If in ΔABC \(\overrightarrow{\mathrm{BX}}\) and \(\overrightarrow{\mathrm{CY}}\) are bisectors to the base angles then ∠BXC =
A) 90° + \(\frac{1}{2}\)∠A
B) 90° – \(\frac{1}{2}\)∠A
C) 180°- \(\frac{1}{2}\)∠A
D) None
Answer:
A) 90° + \(\frac{1}{2}\)∠A
Question 11.
No. of circles drawn from a given point is
A) 1
B) 2
C) 3
D) Infinite
Answer:
A) 1
Question 12.
The circumcentre‘O’shown in the figure is formed by the concurrence of
A) Perpendicular bisectors
B) Angular bisectors
C) Medians
D) Altitudes
Answer:
A) Perpendicular bisectors