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11111nata11111 [884]
3 years ago
12

How do I do this? Tell me how you got the answer

Mathematics
1 answer:
kotykmax [81]3 years ago
3 0
1: supplementary means 180 degrees so subtract 30 from 180 and angle b is 150 degrees.
2: complementary means 90 degrees so subtract 49 from 90 and the second angle is 41 degrees.
3: a right angle is 90 degrees.
4: congruent means same size same shape so if the first angle is 40 degrees then the second angle would also be 40 degrees.
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8 0
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nydimaria [60]

Answer:

CPCTC - Corresponding Parts of Congruent Triangles are Congruent

Step-by-step explanation:

When two triangles are congruent, this means they have the same shape and the same size. To have the same shape, each angle must be congruent. To have the same size, each side length must be congruent. When you know two triangles are congruent you can say each corresponding part of congruent triangles is congruent. This is known as CPCTC.

7 0
3 years ago
Find the length of the rectangle with a perimeter of 200 cm and breadth of 10 cm.
Rudiy27

Step-by-step explanation:

Given,

Perimeter of the rectangle = 200cm

Breadth of the rectangle = 10 cm

Therefore, by the problem

=> 2(l+b) = 200cm

=> 2(l + 10) = 200cm

=  > l + 10 =  \frac{200}{2}

=> l + 10 = 100

=> l = 100 - 10

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4 0
2 years ago
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Hope this helps!
5 0
3 years ago
Read 2 more answers
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