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
ExtremeBDS [4]
2 years ago
10

Using square ABCD, calculate the measure of ZEDC, if mZECD = 45°. =

Mathematics
2 answers:
never [62]2 years ago
8 0

Answer:

45

Step-by-step explanation:

In square, the diagonals bisect each other at 90,

∠DEC = 90°

ED = EC

So, ΔECD is isosceles triangle.

Angles opposite to equal sides are equal.

∠EDC = ∠ECD = 45

pantera1 [17]2 years ago
7 0

Answer:

45°

Step-by-step explanation:

Two diagonals of a square intersect at right angle, I.e., 90°

BD and AC are two such diagonals of the square ABCD.

Since, they intersect at 90°:

∠DEC = 90°

We're given the value of ∠ECD and that is 45°

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

<h3><u>Observing</u><u> </u><u>Triangle EDC:</u></h3>

<em>Sum of all angles in a triangle = 180°</em>

=> ∠DEC + ∠ECD + ∠EDC = 180°

=> 90 + 45 + ∠EDC = 180°

=> 135 + ∠EDC = 180

=> ∠EDC = 180 - 135

<u>=> ∠EDC = 45</u>

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

<h3><u>Answer</u><u>:</u></h3>

Hence, we know the value of ∠EDC and that is 45°

You might be interested in
Mrs. Polonsky has 19 students in her science class. Drag each ratio to the appropriate category.
antoniya [11.8K]

Answer:

Teachers to Students: 1:9, 1 to 19, 1/19

Students to teachers: 19:1, 19 to 1, 19/1

(If this is wrong the answers might be different for you but this is what I got an I was right)

4 0
2 years ago
Please help me with this question!!
ziro4ka [17]
Your answer would be A.) False; either both are right or one is obtuse

Two acute angles added could never equal 180

Hope this helps!
5 0
3 years ago
A parallelogram with perpendicular diagonals is a
Anestetic [448]
Rhombus. The diagonals of a rhombus are parallel, and each diagonal bisect two angles of the rhombus.

8 0
3 years ago
Question 1 of 10
Vadim26 [7]

Answer:

B, C

Step-by-step explanation:

graph the following lines with negative slopes and compare:

y = -x + 1

y = -20x + 2

6 0
2 years ago
Read 2 more answers
Can someone help me​
marta [7]

Answer:

50

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
Other questions:
  • I need help please ....
    5·1 answer
  • 41 feet to yards , express the answer as a mixed fraction
    8·2 answers
  • Write 10 feet and 6 yards as a fraction in simplest form
    15·1 answer
  • F(x) = 2x2 - X - 15 find f(-6).
    5·1 answer
  • Ik this isnt part of math but I really need help with this question please answer as soon as possible im being timed on this tes
    5·1 answer
  • Please do the equation and cost for 15 people
    5·1 answer
  • I will give a brainlest, i promise, please help me with this.​
    5·1 answer
  • What is the value of b2-4ac for the following equation? 5x2+7x=6​
    6·1 answer
  • A new hotel is planning on installing an elevator for its 40-floor tower. If there is no basement, how could one write the abili
    6·1 answer
  • Which expression is equivalent to 21\root(3)(15)-9\root(3)(15)
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!