Question

complete the given activity​

Answer 1

Answer:

In,

1. 180°
2. x
3. 80
4. 100.

Answer 2

$\tt{\angle a~+~\angle b ~=~ }$$\fbox{180°}$

$\large{\sf{.°.~80°~+}}$$\fbox{x}$$\large{\sf{=~180°}}$

$\large{\sf{.°.~x~=~180~-}}$$\fbox{80}$

$\large{\sf{.°.~x~=~}}$$\fbox{100°}$

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$\red{\sf\frak{-~shashi1979bala}}$