2 years ago

What is m angle 1? 35° 40° 55° 70°

Mathematics

1 answer:

gizmo_the_mogwai [7]2 years ago

5 0

9514 1404 393

Answer:

(b) 40°

Step-by-step explanation:

Angle x and the one marked 70° are alternate interior angles, so are congruent. The sum of the two base angles of the isosceles triangle is ...

x° +x° = 70° +70° = 140°

So, the remaining angle 1 in the triangle is ...

180° -140° = 40°

∠1 = 40°

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