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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

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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


The isosceles trapezoid is part of an isosceles triangle with a 32 degrees vertex anglewhat is the measure of an acute base angle of the trapezoid?

In an isosceles triangle with a vertex angle of 32 degrees, the base angles are each equal to ( \frac{180^\circ - 32^\circ}{2} = 74^\circ ). Since the isosceles trapezoid is formed from this triangle, the acute base angles of the trapezoid are also equal to the base angles of the triangle. Therefore, the measure of an acute base angle of the trapezoid is 74 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.

Related Questions

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.


If the vertex of an isosceles triangle equals 40 then the measure of each base angle is?

70


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.


What is the measure of a base angle of an isosceles triangle if the vertex angle measures 38 and each of the two congruent sides measures 21 units?

The measure of each base angle in an isosceles triangle can be calculated by dividing the total angle sum by the number of base angles, i.e., (180 - vertex angle) / 2. In this case, each base angle of the isosceles triangle would measure (180 - 38) / 2 = 71 degrees.


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


The isosceles trapezoid is part of an isosceles triangle with a 32 degrees vertex anglewhat is the measure of an acute base angle of the trapezoid?

In an isosceles triangle with a vertex angle of 32 degrees, the base angles are each equal to ( \frac{180^\circ - 32^\circ}{2} = 74^\circ ). Since the isosceles trapezoid is formed from this triangle, the acute base angles of the trapezoid are also equal to the base angles of the triangle. Therefore, the measure of an acute base angle of the trapezoid is 74 degrees.


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


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.