แผ่นงานGeometry LinkIt! Practice
คำถามทั้งหมด: 10
In triangle ABC, D is the midpoint of line segment AB and E is the midpoint of line segment BC .
The table below is an incomplete proof to show DE∥AC and DE=21AC .
To complete the proof, drag and drop the correct statements and reasons from the list below.
A man observes a balloon at a 64° angle of elevation. He knows the balloon is hovering directly above a point on the ground, 120 feet to the east, as shown in the figure below.
If the man is 5 feet tall, what is h, the altitude of the balloon, to the nearest whole foot?
Use the trigonometric ratios provided and enter your answer in the box.
(a)
Drag the transformations used into the boxes to show the sequence that generated A′B′C′ from ABC.
Transformation used:
Step 1: (a)
Step 2: (b)
The table shows an incomplete proof that ∠ 1≅∠ 2 . Drag the correct step and reason to complete the proof.
Drag and drop the numbers into each of the boxes to complete the sentence.
The scale factor of the dilation is (a) , and the coordinates of the center of the dilation are ( (b) , (c) ).
Enter the number in the box.
PR = (a) cm
Click on the triangles that can be mapped onto ΔABC by a sequence of translations, rotations, reflections, or dilations. Select all that apply.
The coordinates of triangle PQR plotted on a coordinate plane are P(−6,9) , Q(6,4) , and R(2,1) .
Enter a number in the box to complete the sentence.
The perimeter of the triangle is (a) units. Round your answer to the nearest tenth.
Decide whether each pair of triangles must be congruent. Drag the correct congruency criteria into the boxes, or if congruence cannot be determined drag "None".
Drag and drop the numbers below to complete the answer.
tanA= (a) / (b)
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