Answer:
WZY= 13
Explanation:
Given
Rhombus WXYZ (See attachment for diagram)
Note that: Rhombus in the attachment is not drawn to scale
<YWX = 77
Required
Find <WZX
Given that <YWZ is congruent to <YWX;
<YWZ = <YWX = 77
Since opposite sides of a rhombus are parallel; then
<YWZ = <ZYX = 77
Let the center of the Rhombus be represented by P
<P = 90 (ZX and WY are perpendicular lines)
In Triangle PWZ
The sum of angles in a triangle is 180;
So,
<PWZ + <WZP + <P = 180
Substitute <P = 90; <PWZ = 77;
77 + <PZW + 90 = 180
Collect like terms
90 + 77 + <WZP = 180
167 + <WZP = 180
Subtract 167 from both sides
167 - 167 + <WZP = 180 - 167
<WZP = 13
Since line ZP extends to ZX;
<WZX = <WZP = 13
Hence, <WZX = 13;