VI
QUADRILATERALS
- 26cm
- 25cm
28cm
There is a visit in a school by Directorate of Education. Girls are
asked to prepare Rangoli in triangular shape. Dimensions of triangleABC
are 26 cm, 28 cm, 25 cm. Garland is to be placed along the side of
trianglePOR which is formed by joining midpoints of sides of triangleABC.
(a) Find the length of garland. 13 + 14 +12.5 = 39.5
(b) What values are depicted here?
Answers
Given : Dimensions of triangle ABC are 26 cm, 28 cm, 25 cm.
Garland is to be placed along the side of triangle POR which is formed by joining midpoints of sides of triangle ABC
To Find : the length of garland
Solution:
line joining the mid-point of two sides of a triangle is equal to half the length of the third side
Hence PO = AB/2 = 26/2 = 13 cm
OR = BC/2 = 28/2 = 14 cm
PR = AC/2 = 25/2 = 12.5 cm
Garland is to be placed along the side of triangle POR
length of garland = perimeter of ΔPOR
= 13 + 14 + 12.5
= 39.5 cm
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