Mathematics

Grade9

Easy

Question

The measure of $angle B C D$ is _________.

45^°
55^°
135^°
60^°

hint Hint:

In the question we have to find the angle BCD, which belongs to triangle BDC. Also AB is parallel to DC So, using the theorem alternate interior angles are equal we can find angle BDC , now in the triangle two sides are equal so the angles opposite will also be equal. This will help us to find the required angle.

The correct answer is: 45^°

The measurement of $angle B C D$ is_45 $degree$ _.

APQ,
AB is parallel to DC,
So, $angle A B D equals angle B D C$ =45 $degree$
In $increment B D C$ ,
BD=BC
So, $angle B D C equals angle B C D equals 45 degree$ (angles opposite to the equal sides are equal.)

In fig., if AB = AC and PB = QC, then by which congruence criterion is PBC ≅ QCB

MathematicsGrade9

Grade9

Mathematics

In an isosceles triangle ABC with AB = AC, if BD and CE are the altitudes, then BD and CE are______.

MathematicsGrade9

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The measure of is _________.

45°55°135°60°

The correct answer is: 45°

The measurement of is___45___.APQ,AB is parallel to DC,So,=45In ,BD=BCSo, (angles opposite to the equal sides are equal.)

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The measure of $angle B C D$ is _________.

45^°
55^°
135^°
60^°

The correct answer is: 45^°

The measurement of $angle B C D$ is_45 $degree$ _.

APQ,
AB is parallel to DC,
So, $angle A B D equals angle B D C$ =45 $degree$
In $increment B D C$ ,
BD=BC
So, $angle B D C equals angle B C D equals 45 degree$ (angles opposite to the equal sides are equal.)

How are $angle H K N$ and $angle A B E$ related to each other?

How are $angle H K N$ and $angle A B E$ related to each other?

Find $angle D A C$ .

Find $angle D A C$ .

The angles $angle D W B$ and $angle T Z R$ are ________.

The angles $angle D W B$ and $angle T Z R$ are ________.