8.1 Introduction & Angle Sum Property

Step 1

Let the angles be $3x, 5x, 9x, 13x$ .

Step 2

According to the Angle Sum Property, their sum is $360^\circ$ .

Step 3

$3x + 5x + 9x + 13x = 360^\circ$ .

Step 4

$30x = 360^\circ \implies x = 12^\circ$ .

Step 5

Angles are: $3(12)=36^\circ, 5(12)=60^\circ, 9(12)=108^\circ, 13(12)=156^\circ$ .

Final Answer

$36^\circ, 60^\circ, 108^\circ, 156^\circ$

Operation

Enter vertices in order (A-B-C-D).

A (x1, y1)

B (x2, y2)

C (x3, y3)

D (x4, y4)

Enter values and click Analyze.