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ser-zykov [4K]
2 years ago
7

A rectangular painting is 42 centimeters wide and 51 centimeters long. What is the perimeter of this painting?

Mathematics
1 answer:
Alex2 years ago
6 0
186cm
You add all the sides up, so 42+42+51+51 which equals 186cm
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Proving trapezoid theorems Geometry
Artist 52 [7]

Answer:

ΔABD ≅ ΔACD by SAS, therefore;

\overline {BD} \cong \overline {CA} by CPCTC

Step-by-step explanation:

The two column proof is presented as follows;

Statement {}                   Reason

ABCD is a trapezoid {}  Given

\overline {BA} \cong \overline {CD}  {}                   Given

\overline {BC} \parallel \overline {AD}   {}                   Definition of a trapezoid

ABCD is an isosceles trapezoid  {}    Left and right leg are equal

∠BAD ≅ ∠CDA  {}          Base angle of an isosceles trapezoid are congruent

\overline {AD} \cong \overline {AD}   {}                  Reflexive property

ΔABD ≅ ΔACD   {}         By SAS rule of congruency

\overline {BD} \cong \overline {CA}   {}                  CPCTC

CPCTC; Congruent Parts of Congruent Triangles are Congruent

SAS; Side Angle Side rule of congruency

8 0
2 years ago
Read 2 more answers
Can some one help me on 11 Please
AlexFokin [52]
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3 years ago
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musickatia [10]

Answer:

7 hours

Step-by-step explanation:

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Best of Luck!

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Y = x - 7

or 

f(x) = x - 7
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