0
Isosceles triangle with legs each 9 feet long and base 12 feet long . what is area?
Wiki User
∙ 14y ago
Drop a perpendicular from apex to midpoint of base. You now have two Pythagorean triangles with hypotenuse 9 feet and one side 6 feet. Altitude = sqrt (81 - 36) = 3 root 5, so area of original triangle is 6 x 3 root 5 = 18 root 5 = 40.25 sq feet to the nearest hundredth
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
What is a base angle of an isosceles triangle?
The base angles of an isosceles triangle are the two angles that are equal to each other. They can be between 89.999...o and 0.000000..01o.
What is the measure of an acute base angle of the trapezoid of an isosceles triangle vertex of 46 degrees?
For an isosceles triangle with vertex 46 degrees, the sum of the remaining two base angles is 180-46 = 134 degrees. Base angles are equal because it's isosceles, so each angle is half of their sum. 134/2 = 67 degrees. Thus, any isosceles trapezoid formed inside that isosceles triangle by drawing parallel lines to the triangle's base, will have base angle measures of 67 degrees, which are triangle's base angles.
If the non-base angle of an isosceles triangle has a measure of 78 degrees what is the measure of each base angle?
51 degees
What us the area of an isosceles triangle when the length of two sides is 7?
You can't tell the area from that much information. In order to find the area you can measure the base and height and multiply them by each other. Then divide the product by two.
An isosceles triangle with a base of 5 cm has a perimeter of 30 cm how long are each of the other two sides?
They are 12.5 cm each.
What is a base angle of an isosceles triangle?
The base angles of an isosceles triangle are the two angles that are equal to each other. They can be between 89.999...o and 0.000000..01o.
Definition Base angles of Isosceles triangles?
The base angles of an isosceles triangle are the two angles with the same measure, each formed by the intersection between the base of the triangle and one of the two legs.
What is the measure of an acute base angle of the trapezoid of an isosceles triangle vertex of 46 degrees?
For an isosceles triangle with vertex 46 degrees, the sum of the remaining two base angles is 180-46 = 134 degrees. Base angles are equal because it's isosceles, so each angle is half of their sum. 134/2 = 67 degrees. Thus, any isosceles trapezoid formed inside that isosceles triangle by drawing parallel lines to the triangle's base, will have base angle measures of 67 degrees, which are triangle's base angles.
If the vertex of an isosceles triangle equals 40 then the measure of each base angle is?
70
If the non-base angle of an isosceles triangle has a measure of 78 degrees what is the measure of each base angle?
51 degees
What ventex angle of an isosceles triangle is 70 degree what is each base angle?
55 degrees because there are 180 degrees in a triangle
5 If the non-base angle of an isosceles triangle has a measure of 70 degrees what is the measure of each base angle?
55 degrees
If the non base angle of an isosceles triangle has a measure of 78 degree's what is the measure of each base angle?
(180 - 78) / 2...
What are the measures of the Base angles of an isosceles triangle whose vertex angle has measure of 55?
Each base angle is 62.5 degrees
What us the area of an isosceles triangle when the length of two sides is 7?
You can't tell the area from that much information. In order to find the area you can measure the base and height and multiply them by each other. Then divide the product by two.
Is an isosceles triangle equal to a right triangle?
An isosceles triangle is a right triangle only when the other two interior angles are each 45o.
What is the base angles of an isosceles triangle?
you need the apex angle, call it n. Each base angle is one-half of (180 - n)
