1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
mamaluj [8]
3 years ago
5

Which triangle must be a right triangle and why?

Mathematics
2 answers:
Lapatulllka [165]3 years ago
8 0
Of your answers, the first one is correct. There are two right triangles in the graph, ABC and A'B'C'. However, only A'B'C' is listed.
Ipatiy [6.2K]3 years ago
4 0

Answer:

Option 4 is correct: ΔBGC is right angle because line EG ⊥ line segment CC'.

Step-by-step explanation:

Right Angled triangle is triangle with measure of one angle 90°.

Option A:

ΔA'B'C' is not right traingle because no angle if of 90° and image has no role in it. It only work if ΔABC is also a right angle traingle but it is not.

Option B:

Intersection of line/line segment has no role in right triangle if it does not intersect at right angle. ∴ ΔADC is not right angled triangle.

Option C:

ΔBCC' is not right angled triangle because thee is not right angle and point B lies on line of reflection has no role in it.

Option D:

ΔBGC is right angle triangle because m∠BGC = 90°.

m∠BGC = 90° as line EG is perpendicular to CC' at G.

Option D is correct.

You might be interested in
3) The width is changed by a scale factor of . What is the new volume? 10 cm 15cm 5 cm
MrRa [10]
I think the answer is A i’m sorry if it’s wrong i’m not for sure.
6 0
2 years ago
If x = 5 cm, y = 12 cm, and z = 13 cm, what is the surface area of the geometric shape formed by this net?
Lera25 [3.4K]

Answer:

the answer is C.  210 sq. cm

Step-by-step explanation:

Find the area of the triangle

The area of one of the triangular faces can be found by using the formula below.  

a = 1/2 bh

a = 1/2 (5 cm) (12 cm)

a = 30 sq. cm

Since there are two triangular faces, multiply the area of one triangular face by 2. The area of two triangular faces is 60 cm2.

Next, find the area of each of the three rectangular faces using the formula, area = lw.

1st rectangle

a = lw

a =  (5 cm) (5 cm)

a = 25 sq. cm

2nd rectangle

a = lw

a = (5 cm) (12 cm)

a = 60 sq. cm

3rd rectangle

a = lw

a = (5 cm) (13 cm)

a - 65 sq. cm

Add the three rectangle areas to find a total of 150 sq. cm.

To find the surface area of the triangular prism, add the area of the two triangular faces to the area of the three rectangular faces.

60 sq. cm + 150 sq. cm = 210 sq. cm

4 0
3 years ago
A sphere is inscribed in a cube with a volume of 64 cubic inches. What is the volume of the sphere? Round your answer to the nea
erma4kov [3.2K]

Answer:

the volume of the sphere is

33.51 in^{3}

Step-by-step explanation:

This problem bothers on the mensuration of solid shapes, sphere and cube.

Given data

Volume of cube v =   64 cubic inches

since we are dealing with a cube the height and the radius of the sphere is same as the sides of the cube,

we know that volume of cube is expressed as

v= l*b*h

v=l^{3}

64= l^{3}

l= \sqrt[3]{64}

l= 4 in

also diameter d=length l

Diameter d=  4in

Radius r =  \frac{d}{2}= \frac{4}{2}= {2 in}

Height h=4in

we know that the volume of a sphere is given by

v= \frac{4}{3} \pi r^{3}

substituting into the formula we have

v= \frac{4}{3} \ *3.142*2^{3} \\v=\frac{4*3.142*8}3} \\v= \frac{100.54}{3} \\v= 33.52in^{3}

8 0
2 years ago
HELP ASAPPPP!!! Question in pic. Find the value of x
erik [133]

Answer:

x = 14

Step-by-step explanation:

30 = 3x - 12 (vertically opp)

30 + 12 = 3x

42 = 3x

42÷3 = x

14 = x

5 0
2 years ago
Select the correct answer
Rama09 [41]

Answer:

option c

Step-by-step explanation:

6 0
2 years ago
Other questions:
  • Some please help me
    5·1 answer
  • Will give brainliest.
    15·2 answers
  • Solve the proportion for the variable given. 4/v+10 - 6/v+6
    11·1 answer
  • Solve the equation y/-4 + 5 = 15
    11·2 answers
  • PLEASE HELP ASAPPP<br> which systems of equations represents the matrix shown below??
    7·2 answers
  • 100 POINTS!!!!!!!!!!!!!!!!!!!!!!!!!! PLEASE PROVIDE A GREAT ANSWER (ONE THATS EXPLAINED)IMPORTANT! (IF ITS NOT EXPLAINED IT WILL
    11·2 answers
  • Seven it’s greater then five
    9·2 answers
  • Describe the sequence of transformations that maps the congruent figures.
    15·1 answer
  • For the equation y = -4x -8
    9·2 answers
  • The function f(x) = 1(3)x models the number of virus cells present in a sample after x minutes. About how many cells will be pre
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!