Question

please anyone answer me tomorrow is my examination ​

Answer 1

Answer:

hlo dear

Answar of 4th question

exterior angle = 120 degree

let interior angle = x

they are equal then second angle also x .

exterior angle = sum of interior angle

120 ° = x + x

2x = 120 °

x = 120 ÷ 2 = 60 °

hence each interior angle is 60°

Answar of 8th question:::

area of parallelogram= 1/ 2 × sum of sides × height

area of parllelogram=1/2× ( 14 + 10 ) × 6

= 1/ 2 × 24 × 6

= 72 cm^ 2

Answar of 11 question......

let ABC be an equaterial triangle ( make a triangle )

in this AB = BC = AC( all sides of this triangle are equal)

To prove ::: angle A , angle B , angle C

proof ... AB = AC

angle C = angle B( angle opposite to equal side are equal) ...( 1)

AC = B C

angle B= angle A( angle opp to equal side are equal ) ..(2)

from ( 1) and ( 2)

angle A = angle B = angle = C

now

angle A + angle B + angle C = 180°

angle A + angle A + angle A = 180°

3 angle A = 180

angle A = 180 ÷ 3 = 60 °

hence each angle is 60 ° hence proved

Answar of 5th .... right angle

bcoz when we put angle A = angle B + angle C

then sum of these angle are equal to 180

then angleA+ angle B +angle C = 180

angle A + angle A = 180 ( according to the statement)

2A = 180

A = 180 / 2 = 90

Answar of 7th ... isoceles triangle