Questions on Geometry: Triangles answered by real tutors!

Tutors Answer Your Questions about Triangles (FREE)

Question 140950: The perimeter of a triangle is 24 cm. One side is 2 centimeters longer than the shortest side. The longest side is 2 centimeters less than twice the length of the shortest side. Find the length of each side of the triangle.Please help Thanks
Click here to see answer by scott8148(6628)

Question 141055: A ladder is leaning against a wall. The distance from the bottom of the ladder to the wall is 3 feet less than the length of the ladder. Find the length of the ladder, if the distance of its top to the ground is 4 feet less than the length of the ladder.
I know that visualy the ladder is x, the base from the ladder to the wall is x-3 and from the base to the top of the ladder it is x-4, I just don't klnow how to plug this into an equasion adn solve. Thank you.
Click here to see answer by vleith(2825)

Question 141066: The perimeter of an equilateral triangle is 18. Find its area.
Click here to see answer by checkley77(12569)

Question 141090: How can you find the area and perimeter of a regular triangle with only the apothem given. Or at least the line from the top to the center, I think thats what its called. In the case of the problem, the length is ten.
Click here to see answer by vleith(2825)

Question 141184: I have a triangle , i only have the degrees of the three sides. they are 86,90 and 4 degrees. How do you work out the lenghts of this triangle?

Morné Bekker
Click here to see answer by stanbon(57967)

Question 141194: I have a worksheet
The measure of the vertex angle of an isosceles triangle is 126. Find the measure of each base angle.
I'm not sure how to do this.
Also,
If the measure of an exterior angle drawn at vertex M of triangle LMN is x, then m angle L + m angle N is what?
I am so confused. I don't understand this geometry at all.
Click here to see answer by stanbon(57967)

Question 141336: The hypotenuse of a right triangle is 2.4 units long. The longer leg is 1.7 units longer than the shorter leg. Find the lengths of the sides of the triangle.
Click here to see answer by nabla(475)

Question 141438: a triangle with 14 cenimeters 48 cenemiters and 50 cenimenters what knid of angles is this triangle
Click here to see answer by jojo14344(1512)

Question 141962: Find the length of the legs of a 45°-45°-90° triangle with a hypotenuse of 4 times the square root of 2
Click here to see answer by jojo14344(1512)

Question 142264: If I know the length of all three sides of the triangle, and one angle is 90 degrees, how do I calculate the other two angles (I know all three total 180 degrees).
Susan
Click here to see answer by vleith(2825)

Question 142399: two angles of a triangle are 47 degrees and 74 degrees. what is the other?

Click here to see answer by Fombitz(13828)

Question 142495: If two sides of two triangles are congruent, what needs to be congruent to show the triangles are congruent by SaS
Click here to see answer by stanbon(57967)

Question 142612: An airplane is flying 0.75 miles above the ground. If the pilot must begin a 4° descent to an airport runway, how far is the airplane from the beginning of the runway ( in ground distance) to the nearest tenth of a mile. I sent this problem in twice and no one helped me so can someone please help me out? Thanks
Click here to see answer by Earlsdon(6294)

Question 142607: To find the hypotenuse of a right triangle the equation is a2+b2=c2, but what is the equation for finding the hypotenuse of an obtuse triangle.
Example would be a 12 foot addition to a house with a new roof having an 18 degree angle laid upon an existing roof having a 45 degree angle.
Click here to see answer by jojo14344(1512)

Question 142684: Can you please help me with this problem. Find the measue of the obtuse angle possibility for the triangle with the following dimensions: B= 38 degrees, b= 21, c= 25.
A)47.13 degrees
B)132.87 degrees
C)114.26 degrees
D)145.19 degrees
Thank you very much
Click here to see answer by stanbon(57967)

Question 142690: Can you please help me with this question? Find the measue of angel C in the triangle with the following dimensions a= 28, b= 35, c= 17
a. 52.16
b. 42.39
c. 28.65
d. 31.72
Thank you
Click here to see answer by stanbon(57967)

Question 142688: Can someone please help me with this problem? Find the measue of side c in the triangle with the following demensions:C= 42 degrees, a= 14, b= 12
a. 24.28
b. 9.50
c. 14.53
d. 11.53
Thanks
Click here to see answer by stanbon(57967)

Question 142730: This is a pain. Can anyone help me?
"If the area of an isoceles right triangle is 36 sq. units, what is its exact perimeter. But you can't use trigonometry."

Click here to see answer by edjones(7569)

Question 142911: I have 2 triangles in a trapezoid. there is an "X" in the trapezoid coneecting corners and I need to find the height of 2 verticle triangles ( >< ) and one has the base of nine and the other a base of 15 (the bases of the triangles are the parallel lines in the trapezoid which has an area of 27) I need to find the height of a triangle with the base of 15!
Click here to see answer by psbhowmick(529)

Question 143953: PROBLEM: HEIGHT OF A DOCK:
A BOAT IS BEING PULLED INTO A DOCK WITH A ROPE ATTACHED TO THE BOAT AT WATER LEVEL. WHEN THE BOAT IS 12ft FROM THE DOCK, THE LENGTH OF THE ROPE FROM THE BOAT TO THE DOCK IS 3ft LONGER THAN TWICE THE HEIGHT OF THE DOCK ABOVE THE WATER. FIND THE HEIGHT OF THE DOCK.
*** ON THIS PROBLEM I AM BASICALLY MISSING THE WHOLE CONCEPT OF HOW TO CORRECTLY SET AND FIND THE MATERIAL TO WORK IT OUT... ALTHOUGH I WOULD PERFER SOMEONE TO PLEASE WORK IT OUT STEP BY STEP SO I COULD VISUALLY SEE WHAT ALL I AM DOING WRONG.. THANKS :)
Click here to see answer by vleith(2825)

Question 143954: PROBLEM: HEIGHT OF A PRJECTILE:
A PROJECTILE IS LAUNCHED FROM GROUND LEVEL WITH AN INITIAL VELOCITY OF v0 FEET PER SECOND. NEGLECTING AIR RESISTANCE, ITS HEIGHT IN FEET t SECONDS AFTER LAUCH IS GIVEN BY s = -16^2+ v0t
::: IN NUMBER 25, FIND THE TIME (s) THAT THE PROJECTILE WILL (a)REACH A HEIGHT OF 80ft AND (b) RETURN TO THE GROUND FOR THE GIVEN VALUE OF v0. ROUND ANSWERS TO THE NEAREST HUNDREDTH IF NECESSARY.
** ON THIS PROBLEM I DO NOT KNOW EVEN WHERE TO BEGIN..? ALL OF THE SIGN AND WORDING IS VERY DIFFICULT FOR ME TO COMPREHEND.. PLEASE HELP??.. :)
Click here to see answer by stanbon(57967)

Question 143958: how do you solve for an altitude?

Click here to see answer by MathLover1(6812)

Question 144262: How many cubes measuring 1cm on each edge can fit into a box 4cm by 5cm by 6cm?
-i tried it and ended up getting 120 cubes just by making a diagram and counting it out, but my teacher said it wasn't right. Is there some sort of equation i have to use?
It's 4x5x6, which is 120.
Click here to see answer by Alan3354(31530)

Question 144260: What is the area of a right triangle that has a 45 degree angle and a hypotenuse of 16cm?
i tried using the formula A=1/2(B)(H) for the area of a triangle, but it didn't work since i don't have the base or the height.

Click here to see answer by vleith(2825)

Question 144360: A sloped ceiling has a run of 4 and a rise of 1. What are the measurements of all the angles?
Click here to see answer by vleith(2825)

Question 144351: What is 5X + (X+35X)2X+15)
Click here to see answer by vleith(2825)

Question 144664: Find the area of an equilateral triangle in which the height is 3 square root of 3.
Click here to see answer by checkley77(12569)

Question 144696: If you were given three points on a coordinate plane and asked to determine if they were connected they formed:
How can you determine if the lines of the tirangle are connected on a scalence triangle?
a scalene triangle
Click here to see answer by solver91311(17077)

Question 144862: Can you please help me with this problem. I have tried and tried and I am not sure. I need help asap. Thank you.
A BUILDING CASTS A SHADOW 23FT LONG WHEN THE ANGLE OF ELEVATION OF THE SUN IS 52 DEGREES, FIND THE HEIGHT OF THE BUILDING CORRECT TO THE NEAREST INTEGER.
***I MUST SHOW ALL WORK SO PLEASE DO SO FOR ME*** THANK YOU VERY MUCH***
THE PICTURE SHOWS RIGHT TRIANGLE WITH ONE 90 DEGREE ANGLE AND ONE 52 DEGREE ANGLE. I KNOW THE OTHER ANGLE WOULD BE 38 DEGREES. THE ONLY LENGTH I ASSUME GIVEN WOULD BE 23FT WHICH IS ONE LEG THE OTHER LEG IS NOT GIVEN NOR HYPOTENUSE.
THANK YOU SO MUCH IN ADVANCE! =]
Click here to see answer by Earlsdon(6294)

Question 144884: a playground is situated on a triangular plot of land. two sides of the plot are 175 feet long and they meet at an angle of 70 degrees. for safety reason, a fence is to be placed along the perimeter of the property. How much fencing material is needed?
Click here to see answer by stanbon(57967)

Question 144885: In triangle ABC, given the following measures, find the measure of the missing side a=14.2, c=13.9, m of angle B=27.7
Click here to see answer by Alan3354(31530)

Question 145349: In right triangle ABC, M angle B =90, AB=5, and AC =12. Find BC. Round to the nearest tenth, if necessary.
Click here to see answer by Alan3354(31530)

Question 145540: the top of a lighthouse is 120 meters above sea level. the angle of depression from the top of the lighthouse to the ship is 23 degrees. how far is the ship from the foot of the lighthouse?
Click here to see answer by edjones(7569)

Question 145650: How do you find the height of a triangle with only side lengths given?
Click here to see answer by edjones(7569)

Question 145538: hi, i was wondering if you could help me this problem #38 pg. 12 in the College Geometry 2nd Edition, Musser, Trimpe, and Maurer
the problem is
38. Six coins are arranged in a triangular shape as shown. Rearrange the coins to form a circular shape by movie only two coins. To "move" a coin, you must slide it along the surface without disturbing any other coins, and place it in a new position so that it is touching another coin.

here's a picture i took of the question. click on the link
http://i31.tinypic.com/a9y3o6.jpg
thanks, and please show the work if possible
Click here to see answer by Fombitz(13828)

Question 145787: Triangle ABC. Angle C=90, Suppose line a=6 and line c=8; find the measure of angle A.
Click here to see answer by jim_thompson5910(28715)

Question 145756: How do you find the hieght of a triangle if you already know the measurements of all three sides?
Click here to see answer by jojo14344(1512)

Question 145756: How do you find the hieght of a triangle if you already know the measurements of all three sides?
Click here to see answer by jim_thompson5910(28715)

Question 145814: If you are standing 85ft from the base of a flagpole,and determine that at ground level,you would need to look up at a 30 degree angle to see the top of the flagpole,how tall is the flagpole?Round the height to tenths.
Click here to see answer by nerdybill(7008)

Question 145860: triangleABC is an equilateral triangle,D is a point in BC such that BD is one third of BC.prove 9AD2=7AB2
Click here to see answer by vleith(2825)

Question 145963: I know the length of all 3 sides of a right triangle, how do I find the values for the other 2 angles of the triangle?
Click here to see answer by nerdybill(7008)

Question 145655: In triangle XYZ, XY=YZ. If m angle X=52, find m angle Y???
Click here to see answer by Miss Bruzon(1)

Question 146181: hi, i was wondering if you could help me on this partiular problem. i took a picture of it, to show what the problem is. please show work and explanation. this problem involves calculating the measure of each angle. here's the problem
http://i32.tinypic.com/24zx06e.jpg
thankyou.
Click here to see answer by scott8148(6628)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750