Answer:
54
Step-by-step explanation:
23 - 1 = 22
Add 22 to 32
The rule for regular polygons are very easy. The number of reflectional symmetries is same as the number of sides. Regular polygons have all sides the same length and all angles same. Reflection symmetry means that you can fold the shape along that line and it will match up.
For this question, we want the number of reflectional symmetries of a regular decagon. Decagon is a 10 sided figure. Hence, the number of reflectional symmetries is 10.
There are 5 symmetry lines from one vertex to opposite vertex and 5 more symmetry lines form midpoint of one side to midpoint of opposite side.
ANSWER: 10
Answer:
If two angles are supplementary, then they must form a straight angle. If two angles are obtuse, then they can be vertical angles. If two angles are vertical angles, then they will always be congruent.
Step-by-step explanation:
Answer:
80
Step-by-step explanation:
add up all of the scores then divide by the number of things you added up