Step-by-step explanation:
It is given that the angels of a triangle have a sum of 180°. The angles of a rectangle have a sum of 360°. The angels of a pentagon have a sum of 540.
<u>Let me define the each terms.</u>
1. We know that each angle in a triangle is 60°, So there is a three angle in a regular triangle.
2. We know that each angle in a rectangle, is 90°, So there is a four angle in a regular rectangle.
Similarly,
- There is 8 angle in a regular octagon and each angle measurement is 135°.
So, sum of the angles of an octagon = 135° × 8
Sum of the angles of an octagon = 1080°
Therefore, the required sum of the angles of an octagon is 1080°
72/5 or 14.4 hope this helped you
Answer:
-14°
Step-by-step explanation:
-9 - 5
-9 + (-5)
-14
Answer:
AC=DF
Step-by-step explanation:
You just need that the last sides are congruent so that we know the two triangles are congruent through SSS. Hope this helps!!
