30 point
Select all that apply.
A.
A circle is the set of all points in a plane that are a given distance, the radius, from a given point, the center.
B.
A sector is a fraction of the circle circumference.
C.
A segment of a circle is the part of a circle bounded by an arc and the segment joining its endpoints.
D.
The measure of an arc is equal to the measure of its corresponding central angle.
E.
Arc length of a circle is the region bounded by two radii and the intercepted arc.

Which sum or difference identity would you use to verify that cos (180° - ∅) = -cos ∅? a. sin (α -β) = sin α cos β – cos α sin β b. cos (α -β) = cos α cos β – sin α sin β c. cos (α -β) = cos α cos β + sin α sin β d. sin (α + β) = sin α cos β + cos α sin β

Ann and betty together have $60 ann has $9 more than twice betty’s amount how much money dose each have

Use the following statements to write a compound statement for the conjunction or disjunction. then find its truth value. p: an isosceles triangle has two congruent sides. q: a right angle measures 90° r: four points are always coplanar. s: a decagon has 12 sides. a) a right angle measures 90° or an isosceles triangle has two congruent sides; true. b) a right angle measures 90° and an isosceles triangle has two congruent sides; true. c) a right angle measures 90° and an isosceles triangle does not have two congruent sides; false. d) a right angle measures 90° or an isosceles triangle does not have two congruent sides; true.