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Practice Time 8D

1. If DPQR ≅ DZYX under the correspondence PQR ↔ ZYX, write all the corresponding parts of the
triangles.
2. Pairs of congruent triangles have been given. State the congruence property and name the
congruent triangles in each case.
(a) (b)
A D G J

H
K
I
B C F E L
(c) Q (d)
R A R Q

P B C P
X
3. In the adjoining figure, PQRS is a rectangle. S R
One of the diagonals divides it into two triangles. Is DPQS ≅ DRSQ?

If yes, state the corresponding parts. P Q
4. In the adjoining figure, AB and CD bisect each other at O. C B

(a) State three pairs of equal parts in DAOC and DBOD.
O
(b) Which of the following statements is true?
(i) DAOC ≅ DBOD (ii) ∠AOC = ∠DOB A D
C
5. In the given figure, AX bisects ∠BAC as well as ∠BDC. X
Is DABD ≅ DACD? A D

If yes, state the congruent parts and congruency condition. B
A
6. In the given figure, ABC is a triangle in which AD is the bisector of ∠A.
If AD ⊥ BC, show that DABC is an isosceles triangle.

B D C

www
MAths connect

The Bermuda Triangle is a section of the Atlantic Ocean where ships and
airplanes are said to have disappeared under mysterious circumstances. It
is also known as the Devil's Triangle. The Bermuda triangle serves as the
best illustration of a triangle. Bermuda, Florida, and Puerto Rico often are
identified as the points of the triangle.
Take the help of the internet, find the distance between Florida to Bermuda,
Bermuda to Puerto Rico, and Puerto Rico to Florida. Observe the distances
and check the Inequalities of the Bermuda Triangle.

Mathematics-7 190