# math

posted by .

Triangle ADE is inside rectangle ABCD. Point E is half way between points B and C on the rectangle. Since AB is 8 cm and side AD is 7 cm.
1. what is the area of triangle ADE?
2. what is the ratio of the area of the triangle ABE to the area of triangle ADE?
3. What is the ratio of the area of the triangle CDE to the area of rectangle ABCD?
Thanks so much!!!

• math -

1. area = (1/2)(8)(7) = 28

2. triangle ABE : triangle ADE = 1 : 2

3. area CDE : rect ABCD = 1 : 4

• math -

thx so much!!!

## Similar Questions

Find the area of the shaded region. the outter shape is a rectangle and the inside shape is a triangle everything but the triangle is shaded now the numbers are 18 (on left side of rectangle) and 28 (on the bottom) the wide part of …

For each right triangle, draw the rectangle made by drawing sides opposite the two shorter sides in the triangle. Find the area of each rectangle. 9cm height 4cm width How does the area of each rectangle relate to the area of either …
3. ### Math

Point E is on side AB of rectangle ABCD. If the area of ABCD is 48, what is the area of triangle CDE?
4. ### Math

Point E is on side AB of rectangle ABCD. If the area of ABCD is 48, what is the area of triangle CDE?
5. ### Precalculus

The sides of an isosceles triangle are 10 cm, 10 cm, and 12 cm. A rectangle is inscribed in the triangle with one side on the triangle's base. The other two vertices of the rectangle are on the triangle's legs. Find the Maximum Area …
6. ### Geometry..... reposted ques by me

in the diagram AB=20 cm, BC=21 cm, AD=10 cm and DE= 10.5 cm. Angles ABC and ADE are right angles. if triangle ADE is removed from triangle ABC.What is the area of shaded region that remains?
7. ### logic

the rectangle represented the AB side is 4cm the side BC is 6 cm i want to build a triangle taking the AB segment and the third vertice inside the triangle so his area becomes higher than 8 cm*cm. the area in cm*cm of the region of …
8. ### logic

the rectangle represented the AB side is 4cm the side BC is 6 cm i want to build a triangle taking the AB segment and the third vertice inside the triangle so his area becomes higher than 8 cm*cm. the area in cm*cm of the region of …
9. ### Solid Mensuration 04/15/16

Given trinagle ABC whose sides are AB=15 in., AC=25 in., and BC=30 in. Form a point D on the side AB, a line DE i drawn to a pointE on side AC such that angle ADE is equal to angle ABC. If the perimeter of triangle ADE is 28 in., find …
10. ### Math

In a diagram of an 2 isosceles triangles, where ABC is a big triangle and a ADE, is just inside the top portion of ABC. Isosceles triangle ABC is similar to a isosceles triangle ADE what is the length of DE, which is the base part …

More Similar Questions