MATH JUNIOR HIGH SCHOOL ​

1. 90° since angle a and a right angle is adjacent and is in a straight line 180-90 = 90 2. 80° since angle b and a 100 degree angle is adjacent and is in a straight line 180-100 = 803. 110° since angle b and a 70 degree angle is adjacent and is in a straight line 180-70= 1104. 80° Since the given is a quadrilateral, the sum of it's interior angles is 360 degrees. Just add angle a, b, and c then subtract it by 360. 90+80+110 = 280. 360-280=805. There is no angle e in the given problem6. 100° since angle d and angle f is adjacent and is in a straight line 180-80= 100To find the interior angles of a polygon, you can use the formula (n-2) * 180, where 'n' is the number of sides of the polygon. For regular polygons, where all angles are equal, you can then divide this sum by 'n' to find the measure of a single interior angle. Always remember that a straight line is 180 degrees.

Answered by keinasour | 2025-08-01