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Elodia [21]
3 years ago
5

Acarpenter is framing an opening in a wall to hang a rectangular door which properties must the door frame have

Mathematics
1 answer:
Crank3 years ago
3 0

Answer:The first two should be checked and the last two should be checked. only the middle one should not be checked

Step-by-step explanation:

a door is a rectangle so it takes all the properties of a rectangle.

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Wich set of angles measure could be the measure of the interior angles of a triangle? 90,42 and 58. 60,60 and 60. 100,48 and 43.
4vir4ik [10]

Answer:

60°,60° and 60°.

Step-by-step explanation:

The sum of the interior angle of a triangle

=180°

So, let us test measured sets to get which of them could be the interior angles of a triangle.

The sum of the first measured set

= 90° + 42° + 58°

=190°

Also, the sum of the second measured set

= 60°+ 60° + 60°

=180°

The sum of the third measured set,

= 100°+ 48° + 43°

=191°

Finally, the sum of the fourth measured set

= 31° + 75°+ 70°

=176°

We can clearly conclude that, the measured set 60°,60°and 60° could only be the the set of interior angles of a triangle. Since it is the only set that add up to 180°

6 0
3 years ago
The measurements of all the angles of a triangle​
aleksandr82 [10.1K]

Answer:

60

Step-by-step explanation:

6 0
4 years ago
Read 2 more answers
OKIE I NEED HELP WITH MY MATH CUZ THE INTERNET IS S T U P I D
Rom4ik [11]
When reflecting a point across the x-axis, you multiply the y coordinate by -1 (you flip the sign), so (-8,-3) would turn into (-8,3).

When reflecting a point across the y-axis, you multiply the x coordinate by -1 (flip the sign), so (-8, -3) becomes (8, -3)
5 0
3 years ago
Which triangles are similar?
likoan [24]

Answer:

option B) ΔABE ∼ ΔADC

Step-by-step explanation:

<u><em>The picture of the question in the attached figure</em></u>

we know that

If two triangles are similar, then its corresponding sides are proportional and its corresponding angles are congruent

In this problem

Triangles ABE and ADC are similar by AA Similarity Theorem

because

m∠ ABE≅m∠ADC

m∠ BAE≅m∠DAC

The corresponding sides are

AB and AD

BE and DC

AE and AC

so

\frac{AB}{AD}=\frac{BE}{DC}=\frac{AE}{AC}

8 0
3 years ago
Express answer in exact form. Show all work for full credit.
Gennadij [26K]

Answer:

Area segment = 3/2 π - (9/4)√3 units²

Step-by-step explanation:

∵ The hexagon is regular, then it is formed by 6 equilateral Δ

∵ Area segment = area sector - area Δ

∵ Area sector = (Ф/360) × πr²

∵ Ф = 60° ⇒ central angle of the sector

∵ r = 3

∴ Area sector = (60/360) × (3)² × π = 3/2 π

∵ Area equilateral Δ = 1/4 s²√3

∵ The length of the side of the Δ = 3

∴ Area Δ = 1/4 × (3)² √3 = (9/4)√3

∴ Area segment = 3/2 π - (9/4)√3 units²

4 0
4 years ago
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