1. Name all the triangles in the adjoints
Let the
called an exten
interior opposit
Exterior Angle
(2
D
N
M M
Theorem: 1
K
L
C
angle so forms
angles.
Proof: Let
exterior angle
We know
F
2. Observe the following figures and classify each of the triangles on the basis of their sides.
(iii) G
But
From ean
A
D
(ii)
2
(1)
2.0 cm
5 cm
13 cm
4.5 cm
5 cm
Hence,
H
Remember:
5 cm
C с
E
B
5.4 cm
12 cm
Maths en Tips - 7
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