Question

find the unknown angles.a,b and c​

Answer 1

Answer:

Step-by-step explanation:

$\angle \: a + 130 \degree = 180 \degree........(supplementary \: angles) \\ \\ \underline{ \angle \: a = 50 }\degree \\ \\ \angle \: a = \angle \: b = 50 \degree....angles \: having \: congurent \: sides \\ \\ \angle \: c = \angle \: a + \angle \: b....by \: exterior \: angle \: theorem \\ \\ \\ \underline{ \angle \: c = 100 \degree} \\ \\ \\ \\ \underline{\boxed{\sf{ \angle \: a = 50 \degree \angle \: b = 50 \degree \angle \: c } = 100 \degree}}$

Answer 2

Answer:

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