Question

1.Construct a trapezium RISK in which RI || KS, RI = 7 cm, IS = 5 cm, RK = 6.5 cm and Angle L = 60°.

Answer 1

Answer:

Click the Variable View tab. Type the name for your first variable under the Name column. You can also enter other information about the variable, such as the type (the default is “numeric”), width, decimals, label, etc. Type the name for each variable that you plan to include in your dataset. In this example, I will type “School_Class” since I plan to include a variable for the class level of each student (i.e., 1 = first year, 2 = second year, 3 = third year, and 4 = fourth year). I will also specify 0 decimals since my variable values will only include whole numbers. (The default is two decimals.)

Snapshot of variable view immediately after creating a new variable called School_Class. The number of decimal places has been changed to 0.

Click the Data View tab. Any variable names that you entered in Variable View will now be included in the columns (one variable name per column). You can see that School_Class appears in the first column in this example.

Snapshot of the Data View after initializing a new variable in the Variable View. The header in the first column now displays the variable name School_Class.

Now you can enter values for each case. In this example, cases represent students. For each student, enter a value for their class level in the cell that corresponds to the appropriate row and column. For example, the first person’s information should appear in the first row, under the variable column School_Class. In this example, the first person’s class level is “2,” the second person’s is “1,” the third person’s is “1,” the fourth person’s is “3,” and so on.

Snapshot of the Data View after typing observed data values into the cells of the spreadsheet.

Answer 2

Step-by-step explanation:

In trapezium RISK,

∠I+∠S=180

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⇒60

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+∠S=180

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⇒∠S=120

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Steps for constrction :

Step 1. Draw an arc RI=7cm

Step 2. Make an arc ∠RICX=60

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Step 3. With I as center and radius 5cm , draw an arc cutting IX at S.

Step 4. Make ∠ISY=120

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Step 5. With R as center and radius 6.5cm , draw an arc cutting SY at K.

Step 6. Join KR.