If two adjacent angles have their exterior sides in perpendicular lines, then the two angles are also perpendicular. Exterior and interior angles sum up to 180 degrees. Hence if the exterior angle is perpendicular, then the interior angle should also be perpendicular in order to sum up to 180 degrees.

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3 years ago

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10 red cards and 10 and black cards are placed in a bag. You choose one card and then another without replacing the first card.

MrMuchimi

2/10 right ? hope this helped :)

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3 years ago

Jackson painted 80 bird house. 30% of the bird houses were painted green how many green bird houses did Jackson paint

Elena L [17]

If you take away the 0s you can multiply 8 and 3. sooooo

3x8=24

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