1. consider one angle of a (convex) heptagon. From that angle you can construct 7-3=4 diagonals. (-3 because we cannot create diagonals with the adjacent vertices and the angle itself )
2. 4 diagonals create 5 triangular regions. (check the picture)
3. So the sum of the measures of the interior angles of the heptagon is 180°*5=900°.
4. The measure of the remaining 7th interior angle is 900°-(120+150+135+170+90+125)°=110°.
5. The largest exterior angle is when the interior angle is the smallest.
6. The smallest interior angle is 90°, so the largest exterior angle is 180°-90°=90°
Answer: 90°
right-handThe triangles are similar if, the ratios of their sides are equal


On the left-hand side

and in the right-hand side, we have

The left-hand side equals the right-hand side; therefore, the triangles are similar.
Answer:
7
Step-by-step explanation:
20 - 12 = 8
15 - b = 8
-b = 8 - 15
b = 7 ( -ve signs will become +ve)
Answer:
Step-by-step explanation:to find the y interceapt substitute in 0 for x and solve for y
Answer: 7
Step-by-step explanation:
14*1=14
14/2=7