# math

posted by .

if the sides are 18 24 and 30 what kind of angle is it

• math -

note that it is just a scaled-up 3-4-5 triangle

You can check for a right angle using

30^2 = 18^2 + 24^2

if c^2 = a^2+b^2 it is a right angle
if c^2 < a^2+b^2, it is acute, otherwise obtuse

## Similar Questions

Find the interior and exterior angle measurements of a polygon with this many sides: x=2y help?
2. ### Math

suppose that you know that a given parallelogram has at least one right angle and at least two adjacent sides that sre congruent. Can you make a conclusion about what kind of parallelogram this is?
3. ### Math

Triangle ABC and RST are similar triangles. A=2(x+15)^0,angle S= 3x^0 and angle C=x^0. What are the correct measures of angle B,R,and T?
4. ### trigonometry

---I asked this question Solve the following right triangles: a. a=117 ft, b=16.35 ft b. B=8 degrees 29',and a=32.8 ft Reiny was kind enough to post this reply. "solving" a triangle involves finding all missing sides and angles, so …
5. ### math

Two sides of a triangle have lengths 8 m and 24 m. The angle between them is increasing at a rate of 0.05 rad/s. Find the rate at which the area of the triangle is changing when the angle between the sides of fixed length is 135°. …
6. ### Math

The roof of a solar house is elevated by an angle of 50 at the front and by an angle of 40 at the back. a) what is the measure of the angle at the peak?
7. ### geometry

solution of the questions The sides of a quadrilateral ABCD are 6 cm, 8 cm, 12 cm and 14 cm (taken in order) respectively, and the angle between the first two sides is a right angle. Find its area.
8. ### math

solution of the questions The sides of a quadrilateral ABCD are 6 cm, 8 cm, 12 cm and 14 cm (taken in order) respectively, and the angle between the first two sides is a right angle. Find its area.
9. ### Math

Prove that if the sides of one angle are parallel to the sides of another angle, the angles are congruent. Given: BA||ED, BC||EF, AND BEG Prove:angle ABC is congruent to angle DEF
10. ### Geometry

I have to angles and a side how do I do this Angle 1: 90 degrees Angle 2: 63 degrees Side 1: 5 mm I know angles need to add up to 180 so 90 +63=153 180-153=27 so the angle is 27 How do I figure out the sides?

More Similar Questions