Question

if two angles of quadrilateral are equal and third angle is 70°.find other three angles​

Answer 1

Answer:

Step-by-step explanation:

The sum of adjacent angles of a quadrilateral is 180degree.

So the angle adjacent to the 1,whose measure is 70degree is 180-70=110degree.

And let the other two be x&x.

So 2x=180

So, x=90degree

So all the angles=70,110,90&90degrees

Thanks....

Answer 2

Answer:

Given: Two angles are equal,so let both the two angles separately be 'x' that is first angle=x and second angle also=x

third angle=70°

fourth angle = y

Step-by-step explanation:

As , Adjacent angles equals to 180°

So , If first angle comes in the pair of adjacent angle then its adjacent angle is the second one.

Therefore, x+x=180°

= 2x=180°

= x=180°/2

Hence x=90°

Therefore both the angles measure = 90° & 90° respectively.

NOW,

first angle=90°

second angle=90°

third angle=70°

fourth angle=y

As sum of all the angles of a quadrilateral = 360°

So, 90°+90°+70°+y=360°

= 180°+70°+y=360°

= 250°+y=360°

= y = 360°-250°

Hence y=110°

Therefore the fourth angle is 110°

Hence, 1st angle=90°

2nd angle=90°

3rd angle=70°

4th angle=110°

HOPE IT HELPS U..