Practicing Class 7 Maths MCQ and Class 7 Maths Part 2 Chapter 1 Geometric Twins MCQ Questions Online Test with Answers daily helps in time management.
MCQ on Geometric Twins Class 7
Geometric Twins MCQ Class 7
Class 7 Geometric Twins MCQ
Question 1.
By which of the following criterion two triangles cannot be proved congruent?
(a) AAA
(b) SSS
(c) SAS
(d) ASA
Answer:
(a) AAA
Question 2.
In ΔABC and ΔGHI, angle C = angle G = 45°, BC = HG, CA = GI.
So, we can say that :
(a) ΔABC ≅ ΔGHI
(b) ΔCAB ≅ ΔGHI
(c) ΔBCA ≅ ΔHGI
(d) None of these
Answer:
(c) ΔBCA ≅ ΔHGI
Question 3.
Two triangles have side lengths 5 cm, 6 cm, and 7 cm each. Which conclusion is correct?
(a) The triangles are similar but not congruent
(b) The triangles are congruent by SSS
(c) The triangles are congruent only if one angle is equal
(d) The triangles may or may not be congruent
Answer:
(b) The triangles are congruent by SSS
Question 4.
If ΔABC ≅ ΔPQR, then which of the following is incorrect?
(a) AB = PQ
(b) ∠B = ∠Q
(c) AC = PR
(d) ∠A = ∠R
Answer:
(d) ∠A = ∠R
Question 5.
Figures that have the same shape and size are said to be _________.
(a) similar
(b) congruent
(c) asymmetrical
(d) None of these
Answer:
(b) congruent
Question 6.
Which statement is always true for an equilateral triangle?
(a) Each angle is 45°
(b) Each angle is 90°
(c) Each angle is 60°
(d) Angles may be unequal
Answer:
(c) Each angle is 60°
Question 7.
Which of the following conditions is sufficient to prove triangle congruence by AAS?
(a) Two angles and the included side
(b) Two sides and the included angle
(c) Two angles and a non-included side
(d) Three angles
Answer:
(c) Two angles and a non-included side
Question 8.
If ΔABC ≅ ΔPQR and ∠A = 40°, ∠B = 60°, then ∠R =?
(a) 60°
(b) 40°
(c) 70°
(d) 80°
Answer:
(d) 80°
Question 9.
In ΔABC and ΔPQR, AB = 4 cm, BC = 5 cm, AC = 6 cm and PQ = 4 cm, QR
= 5 cm, PR = 6 cm, then which of the following is true-
(a) ΔABC ≅ ΔQRP
(b) ΔABC ≅ ΔPQR
(c) ΔABC ≅ ΔPRQ
(d) ΔABC ≅ ΔQPR
Answer:
(d) ΔABC ≅ ΔQPR
Question 10.
In the quadrilateral ABCD, AC = AD and AB bisects ∠A and ΔABC ≅ ΔABD. The relation between BC and BD is-
(a) BC>BD
(b) BC<BD
(c) BC = BD
(d) BC = \(\frac{1}{2}\)
Answer:
(c) BC = BD
Geometric Twins Class 7 Fill in the Blanks
1. If angle A, angle B and angle C of ΔA B C are equal then triangle is _________:
Answer:
Equilateral
2. IF ΔDEF ≅ ΔBCA, then the part of ΔBCA that correspond to ∠E is _________.
Answer:
angle C
3. Two triangles are congruent if they have _________.
Answer:
equal measures
4. In congruent triangles ABC and DEF, angle E = 40°, and angle F = 65°, then angle A = _________.
Answer:
75°
5. In the below figure, if EF = QR then the congruence rule used for the congruency of the given triangles is _________.
Answer:
ASA or AAS
6. The symbol used to denote congruency is _________.
Answer:
≅
7. The congruence rule in which two sides and the included angle are equal is called _________.
Answer:
SAS
8. Congruent figures when superimposed _________ exactly on each other.
Answer:
coincide