ACTIVITY 2
An irregular heptagon ABCDEFG have the following measures of interior angles respectively.
(x -9°, 118, 45°, (x + 170°, 1399, (2 - 1) and 111°
1. What is the sum of the Interior angles?_________
2. Find the value of x.________
3. What is the measure of ZA?_________
4. What is the measure of ZF?_________
5. What is the measure of LD?
_________
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Answer:
Answer:
1.900°
2.160°
3.151°
4.159°
5.177°
Step-by-step explanation:
1. INTERIOR ANGLE = (N - 2)(180)
7 -2 = 5
5 × 180 = 900
2. 118 + 45 + 139 + 111 = 413
900 - 413 = 487
487 - 7 = 480
480 ÷ 3 = 160
3. 160 - 9 = 151
4. 160 - 1 = 159
5. 160 + 17 = 177
151 + 118 + 45 + 177 + 139 + 159 + 111 = 900