If a polygon is regular, it has congruent sides and congruent angles. We know that an octagon has 8 sides and a perimeter of 80cm. Because the sides of the octagon are congruent, we can divide 80 by 8 to get <u>10 centimeters for one side. </u> Hope this helps!! :)
Answer:
1. x=4+2y/3
2. x=3/4+y/2
Step-by-step explanation:
hope this helped :))
Triangle Congruence Theorems
Use the triangle congruence theorems below to prove that two triangles are congruent if:
Three sides of one triangle are congruent to three sides of another triangle (SSS: side side side)
Two sides and the angle in between are congruent to the corresponding parts of another triangle (SAS: side angle side)
Two angles and the side in between are congruent to the corresponding parts of another triangle (ASA: angle side angle)
Two angles and the non-included side of one triangle are congruent to the corresponding parts of another triangle (AAS: angle angle side)
The hypotenuse and leg of one right triangle are congruent to the corresponding parts of another right triangle (HL: hypotenuse leg)
Answer:
A = 201.06 units²
A = 78.54 units²
Step-by-step explanation:
Formula for area of a circle = πr²
✔️Area of the first circle:
r = ½(d) = ½(16)
r = 8
Area = π*8² = π*64
Area = 201.06 units²
✔️Area of the second circle:
r = 5
Area = π*5²
= π*25
Area = 78.54 units²