The angle between two altitudes of a parallelogram through the vertex of an obtuse
angle of the parallelogram is 60º. Find the angles of the parallelogram.
120°, 60°, 120°, 60°
15
How many degrees does a decagon have?
1440
15
Find the measure of each exterior angle of a regular octagon.
45
15
What is the sum of the exterior angles of a 100-gon?
360
15
Find the measure of each interior angle in a regular hexagon.
120
15
A regular polygon has a 10˚ exterior angle. How many sides does it have?
36
15
Name 3 quadrilaterals that have diagonals that are congruent.
