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2 years ago

Please ASAP I don’t really understand the concept

Mathematics

1 answer:

Ket [755]2 years ago

4 0

Answer:

A. 280°

Step-by-step explanation:

Look at angles 1 and 2. Together, they form a straight angle. The measure of a straight angle is 180°.

We are told that the measure of <2 is 40°.

Since angles 1 and 2 together measure 180°, then the measure of <1 must be 140° since 180° - 40° = 140°.

Now we have m<1 = 140°.

Angles 1 and 6 are vertical angles. Vertical angles are congruent.

Therefore, m<6 = 140°.

We have m<1 = 140° and m<6 = 140°.

m<1 + m<6 = 140° + 140° = 280°

Answer: A. 280°

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