Question

guys isme jitne hai Saab solve kardo homework hai Mera plz help apne behen samjh ke Kar do Mai brainlist mark Kar doongi pka please please please please please please please please please please please please please please please please please please please please please please please please please please please please​

Answer 1

1. For an Isosceles triangle We know that base angles are same and the vertical angle is different

According to the statement

Vertical angle is 18°more than base angle

Let base angle be B

then vertical angle will be

B+18

Sum of angles of triangle

B +B (B+18)=180

2B+B+18=0

3B=180-18

3B =162°

B=54°

2. Common formula to be used here

Is

Sum of Angles of triangle =180°

• For question 1

66+31+x=180

X=83°

• For 2nd question REFER THE ATTACHMENT

3.

Refer the attachment for diagram

4.

We know that sum of angles of a triangle =180°

Hence

$\frac{5x}{ 6} + \frac{7x}{3} + \frac{13x}{3} = 180 \\ \frac{5x + 14x + 26x}{6} = 180 \\ 45x = 180 \times 6 \\ x = 24 \degree$

Hence The obtuse angle will be

3rd one

$\frac{13x}{3} = \frac{13 \times 24}{3} \\ \angle = 104 \degree$

Hope it helps