Question

measures of angles of the triangle are 50°, 60° and 70°.
40°
20
Ex (2) Observe figure 3.4 and find the measures of ZPRS and ZRTS,
Solution : ZPRS is an exterior angle of A PQR.
So from the theorem of remote interior angles,
ZPRS = ZPQR + ZQPR
= 40° + 30°
= 70°
In A RTS
Fig. 3.4
ZTRS + ZRTS + ZTSR ....... sum of all angles of a triangle
.. + ZRTS +
= 180°
.:. ZRTS +90° = 180°
.. ZRTS =
R
S
> 25 O DOO roo​

Answer 1

Answer:

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Answer 2

Step-by-step explanation:

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