Which segment is both a chord and a diameter? segment

∠AEC = 105°

Step-by-step explanation:

If two chords intersect each other in a circle then the vertical angles formed are equal.

In this question two chords AB and CD intersect each other at point E then ∠DEB and ∠AEC are vertical angles which are equal.

Therefore ∠DEB = ∠AEC

Here m∠DEB = 105°

Then m∠AEC = 105° ( by Theorem)

Therefore the correct answer is ∠AEC = 105°

30 units^2

step-by-step explanation:

area is l × w

the length is 3

and the width is 10

3 × 10= 30 units squared

you can first factor out the n to get n(1+5). we know that 1+5 is 6, so we just have 6n.