Math question 5! Thanks if you help

pythagoras theorem

c^2=a^2+b^2

so rearrange

to find the height

we already have the hypotenuse

9^2 - 7^2= height^2=130

to find height √height^2 = 11.40175425099138

option D is the correct answer.

Step-by-step explanation:

The given triangle is an isosceles triangle which is divided onto two right angle triangles.

The length of the hypotenuse of each right angle triangle is 9

The length of the adjacent of each right angle triangle is 7

h represents the opposite side of each of the right angle triangles.

To determine h, we would apply Pythagoras theorem which is expressed as

Hypotenuse² = opposite side² + adjacent side²

Therefore

9² = h² + 7²

81 = h² + 49

h² = 81 - 49 = 32

h = √32

h = 5.7 units

i believe the answer is the polygon, heptagon.

step-by-step explanation: