Angle Properties of Quadrilateral

1. ANGLE PROPERTIES OF
QUADRILATERAL
By: Musfirah Kazim

2. Kite and Its Properties
Two pairs of sides known as consecutive sides are equal
in length.
One pair of diagonally opposite angles is equal in
measurement.
 These angles are said to be congruent with each other.
The diagonals meet each other at 90°, this means that
they form a perpendicular bisection

3. 100⁰
62⁰
b⁰
a⁰
FIND OUT THE UNKNOWN
ANGLES

4. 100⁰
62⁰
b⁰
a⁰

5. 100⁰
62⁰
b⁰
a⁰
90⁰
90⁰

6. SOLUTION
WHEN WE FOLD THIS KITE IN VERTICALLY SO 100 WILL DIVIDE INTO 2
BECAUSE OF LINE OF SYMMETRY AND MIRROR IMAGE
SO..
a+50+90=180
a+140+180
a=180-140
a=40⁰

7. SAME GOES FOR B
SO..
b+61+90=180
b+151=180
b=180-151
b=29
BUT WAIT WE HAVE FIND OUT THE HALF PART OF THE B RIGHT?
SO
29*2=58
b= 58⁰

8. THANKYOU
;)