Question

guys please , help me with these questions.... I will be very grateful to to that person and mark as brainliest ​

Answer 1

Answer:

Q-4 - 110 deg.

Q-5 - 45 deg.

Q-6 - 55 deg.

Step-by-step explanation:

Q4- Base Angle = 35 deg.

      Sum of all angles = 180 deg.

As we know an isosceles triangle has 2 equal sides and we have one         of these sides so the second base angle will be 35 deg. as well. We will take vertical angle as x

35 + 35 + x = 180.

x = 180 - 70

x = 110 deg.

Q5- Vertical angle = right angle = 90 deg.

       Sum of all angles = 180 deg.

As we know an isosceles triangle has 2 equal sides so we will take these sides collectively as x.

90 + x = 180 deg.

x = 180 - 90

x = 90 deg.

Since we took both of equal angles collectively we will divide x/2 which is 90/2 = 45 deg.

Q6- Lets take both base angles as x since they are equal.

So vertical angle will be x-15

Sum of all angles = 180 deg.

x + x + x-15 = 180 deg.

3x - 15 = 180 deg.

3x = 180 -15

x = 165/3

x = 55

Hope it helps you...